Security Services for Commercial Property London | Guide

Last updated: 22 October 2026

Security services for commercial property in London combine SIA-licensed manned guarding, mobile patrols, CCTV monitoring, access control and key holding, typically costing between £15 and £28 per hour per officer depending on site risk and coverage hours. London holds more than 128,000 SIA licence holders — the highest concentration of any UK region — giving commercial buyers the deepest pool of vetted guarding staff in the country (Professional Security Magazine, 2026).

Key Takeaways

• London accounts for over 128,000 SIA licence holders, the highest regional concentration in the UK, per Professional Security Magazine (2026).
• Business robbery offences rose 90.8% to 29,669 in the year ending March 2026, though the ONS attributes much of this rise to a Home Office recording-rule change rather than a real crime surge (ONS, 2026).
• Theft remains the most common offence against UK businesses, affecting 14% of premises in the 2023 Commercial Victimisation Survey, mostly driven by customer theft at 10% of premises (Home Office, 2023).
• Priority First notes that every security operative working in a public-facing role in the UK must hold a licence from the Security Industry Authority, the statutory regulator created under the Private Security Industry Act 2001.
• Priority First has secured over £1.6 billion in client assets across construction, commercial, luxury retail, hotel and residential sectors, as published in its Estates Gazette advertisement feature of 1 November 2026.

What Are Commercial Property Security Services in London?

Commercial property security services are the combined set of guarding, monitoring and access-control measures a business or landlord puts in place to protect a building, its occupants and its assets. In London, this typically means a blend of SIA-licensed manned guarding, mobile patrol visits, remote CCTV monitoring, electronic access control and out-of-hours key holding with alarm response.

Most prime central London buildings do not rely on a single measure. A Mayfair office block, for example, might combine a front-of-house concierge team during business hours with CCTV monitoring and key holding overnight — layering visible deterrence with remote oversight.

The core service types available are:

• Manned guarding — SIA-licensed officers stationed on site, either static at entrances or roving across a building.
• Mobile patrols — scheduled visits to multiple sites by a patrol vehicle, useful for retail parades, car parks or lower-risk premises that don't justify a permanent guard.
• CCTV monitoring — remote surveillance, either self-monitored or routed to a staffed control room for live escalation.
• Access control — card, fob or biometric systems restricting entry to authorised personnel.
• Key holding and alarm response — a licensed keyholder attends the property when an alarm activates, removing the legal need for the business owner to attend at 3am.

Priority First delivers all of these as integrated services rather than siloed contracts, which matters because a building's security posture usually needs more than one layer working together. The company's services span manned guarding, key holding and alarm response, CCTV monitoring, concierge and front-of-house management, and facilities management delivered by the same accountable provider.

How Much Do Commercial Property Security Services Cost in London?

Commercial security costs in London vary primarily by coverage hours, site risk profile and whether a service is manned, patrolled or remotely monitored. A single static guard typically costs more per hour than a shared mobile patrol, but far less than a multi-officer team covering a large site around the clock.

Pricing is shaped by several variables: the number of hours covered, whether cover is single-officer or multi-officer, the complexity of the site (multiple entrances, car parks, loading bays), and whether additional services like key holding or CCTV monitoring are bundled in.

Service type	Typical London price indication	Best suited to
Mobile patrol (shared route)	From circa £2,000/year for scheduled visits	Retail units, small commercial premises outside trading hours
Static manned guarding (single officer)	Varies by hours and site risk	Offices, retail, construction sites requiring continuous presence
Key holding & alarm response	From circa £2,000/year	Any commercial premises needing out-of-hours alarm cover
CCTV monitoring	Priced per camera/site	Buildings wanting remote oversight without full-time officers
Canine security units	Priced per deployment	Large perimeters, distribution sites, high-value storage

Two Priority First case studies illustrate the lower end of this range concretely. A commercial premises in Chelsea/Knightsbridge contracted manned security at a cost of circa £2,000 a year, with every patrol, incident and handover logged on Priority First's platform and each checkpoint completed with a photograph, GPS location and timestamp. A second Chelsea/Knightsbridge commercial client combined key holding, manned security and street patrol — also at circa £2,000 a year — with scheduled external patrols run to varied timings and photographed checkpoints, giving the business a visible deterrent and a verifiable record of every visit.

At the other end of the scale, a large distribution facility in the West Midlands needed a different model entirely. High-value stock, constant vehicle movement and a perimeter too large to secure from a single gatehouse led Priority First to deploy canine units alongside manned security and facilities management, with every patrol and maintenance task logged on one platform so the client had a single accountable record for the whole site.

Ways to reduce security costs without cutting coverage

• Bundle security with facilities management under one provider to reduce duplicated site visits and management overheads.
• Use mobile patrols rather than static guarding for lower-risk periods, reserving manned presence for peak-risk hours.
• Combine CCTV monitoring with key holding so alarm response only escalates to a physical attendance when genuinely required.
• Review contract hours quarterly against actual incident data rather than locking in a fixed rota indefinitely.

Alternatives to consider

Not every commercial property needs permanent manned guarding. A low-footfall office outside a high-crime area might be adequately served by CCTV monitoring plus key holding and alarm response, stepping up to patrols or static guarding only during building works, high-value deliveries or periods of known local disorder.

What SIA Licensing and Legal Requirements Apply to Security Companies?

The Security Industry Authority (SIA) is the statutory body that licenses individual security operatives in the UK under the Private Security Industry Act 2001. Priority First confirms that any guard performing licensable activities — including manned guarding, door supervision, CCTV operation in a public space, or key holding — must hold a valid SIA licence before working.

The UK's licensed security workforce has grown substantially. There were around 451,000 active SIA licence holders in the UK in 2026, compared with just under 235,000 in 2008 (Statista, citing GOV.UK data, 2026). By November 2026, the SIA's monthly statistics showed a record total of 458,705 licence holders nationally (Professional Security Magazine, 2026).

London's share of that workforce is disproportionately large. London had more than 128,000 SIA licence holders, the highest concentration in the UK by region, reflecting the capital's density of offices, retail, hospitality and prime residential stock requiring security cover (Professional Security Magazine / SIA monthly statistics, 2026).

Beyond individual licensing, several standards and frameworks shape how reputable providers operate:

• BS 7858 — the British Standard for security screening of personnel, covering identity verification, employment history checks and criminal record screening.
• BS 7499 — the British Standard specifying requirements for static guarding and mobile patrol services.
• The Terrorism (Protection of Premises) Act 2026, commonly known as Martyn's Law, introduces a statutory duty for responsible persons at qualifying premises to put in place proportionate measures against terrorist attack, with the SIA taking on an enforcement role (Martyn's Law overview).

Priority First advises commercial buyers to ask any prospective provider to confirm that every operative's SIA licence is current and that personnel have been screened to BS 7858 before placement on site.

Who Is Legally Responsible for Commercial Property Security — Landlord, Agent or Tenant?

Responsibility for commercial property security in England and Wales is typically set out in the lease, but it defaults in practice to whoever controls the common parts and building fabric. In a multi-let building, the landlord or managing agent usually holds responsibility for shared entrances, car parks and perimeter security, while the tenant is responsible for security within their own demise.

This split matters because gaps between landlord and tenant obligations are where incidents happen. A reception desk left unmanned because the landlord assumed the managing agent covered it, or a fire exit left propped because no single party was monitoring it, are common failure points in multi-occupancy commercial buildings.

Martyn's Law adds a further statutory layer on top of lease terms. Priority First points out that, under the Terrorism (Protection of Premises) Act 2026, the "responsible person" for a qualifying premises — generally whoever has control of the building — must assess risk and implement proportionate protective measures, regardless of how the lease allocates day-to-day security costs.

Priority First's approach is to clarify this split at the outset of any engagement, mapping which party is accountable for which zone before coverage begins — because an unclear boundary between landlord and tenant obligations is one of the most common gaps a security audit uncovers.

How Do I Check a Security Company Is Reputable, Accredited and Properly Insured?

Verifying a security provider before signing a contract means confirming three things: that its guards hold valid SIA licences, that the company carries adequate public and employers' liability insurance, and that it can evidence delivered coverage rather than simply promising it.

Start by asking the provider to confirm its Companies House registration — a legitimate security firm will have no difficulty sharing this. Priority First, for example, is registered at Companies House under number 14830917 and headquartered in Mayfair, London.

Ask to see evidence of:

• SIA licence numbers for every officer proposed for your site, which you can spot-check against the SIA's public register.
• Employer's liability and public liability insurance certificates, confirming cover levels appropriate to your premises' risk profile.
• BS 7858 screening records for personnel, confirming identity, employment history and criminal record checks.
• Proof of delivered service, not just promised service — photo-backed patrol logs, GPS-timestamped checkpoints, and incident reporting.

This last point is often overlooked, and it's where many contracts fail in practice. A rota on paper says nothing about whether a patrol was actually completed, which checkpoint was skipped, or whether an officer attended at the time logged.

Priority First addresses this with a platform requiring every checkpoint to carry a watermarked photograph, GPS location and timestamp to register as complete — missed areas show as gaps in the record rather than passing silently. Across its portfolio, the company has recorded over 4,900 photo-backed patrols, each with officer ID, GPS and timestamp attached, and currently runs 24 sites on a single platform, up from 18 at the previous count.

One client summed up the difference this makes in practice: *

What Questions Should I Ask When Comparing Security Quotes?

Comparing security quotes properly means asking providers to detail exactly what's included per hour quoted, not just the headline rate. Two quotes at the same hourly figure can represent very different service levels once supervision, reporting and equipment are accounted for.

Questions worth asking every provider:

1. Is the quoted rate inclusive of National Insurance, holiday pay and pension contributions, or is it a bare wage figure that will rise once statutory costs are added?
2. How is patrol or guard attendance evidenced — paper logs, a phone call, or a timestamped, photographed record?
3. What is the escalation process if an officer fails to attend a shift, and is there a guaranteed response time for cover?
4. Are officers screened to BS 7858, and can licence numbers be provided before contract start?
5. Is out-of-hours key holding and alarm response included, or billed as a separate line item?
6. How quickly can the provider mobilise for an emergency deployment, and what is their track record on response speed?

On that last point, Priority First has a verified example worth citing: when a Covent Garden site was broken into overnight, the client called at 12:30, a quote was agreed on the same call, and an SIA operative was on site by 14:30 — a two-hour window from first contact to deployment.

How Many Guards Does a Typical London Commercial Property Need?

The right level of guarding for a commercial property depends on footfall, number of entry points, asset value and whether the risk profile changes by time of day. There is no fixed industry ratio, but a structured risk assessment should drive the number before a contract is signed, not the other way round.

A small retail unit in Chelsea might need only a single mobile patrol visit per night plus key holding, while a 16-building prime London estate requires continuous coverage across hundreds of checkpoints. One such 16-building prime estate currently runs 250 to 280 patrols per building, all photo-backed, in a portfolio where that level of verification was previously unprovable before onboarding.

Mid-sized commercial buildings in central London commonly settle on one of these patterns:

• Single static officer during business hours for a self-contained office building with a single reception.
• Two-officer rotation for buildings with multiple entrances or higher footfall, ensuring reception is never left unmanned during breaks.
• Patrol-only coverage out of hours, stepping up to a static presence only during building works or known risk periods.
• Full 24/7 static guarding for mixed-use developments, flagship retail, or sites holding high-value stock.

"In a hotel, everyone in the lobby is a guest until proven otherwise, and treating a guest like a suspect costs you more than most incidents would. Hospitality security is the discipline of protecting people who must never feel policed — it takes a particular temperament, and we recruit for it specifically," says Mo Hassan, Managing Director, Priority First. The same principle applies to mixed-use commercial buildings with public-facing ground floors: the right headcount is as much about tone as numbers.

What Security Risks Are Common in London Commercial Properties?

London commercial properties face a specific risk profile shaped by high footfall, dense occupancy and a concentration of high-value premises in areas like Mayfair, Knightsbridge and the City. The three most relevant categories are theft, burglary and, increasingly, robbery-related offences against business property.

National data shows a mixed but significant picture. Theft was the most prevalent offence type against businesses in the Home Office's most recent survey, experienced by 14% of premises, with customer theft alone affecting 10% of premises (Home Office, 2023 Commercial Victimisation Survey, 2023).

Burglary trends offer a more encouraging signal. Police recorded burglary, including both residential and non-residential offences, fell by 9% to 223,456 offences in the year ending March 2026 (Office for National Statistics, 2026).

Robbery figures require more caution in interpretation. Police-recorded robberies of business property surged 91% to 29,669 offences in the year ending March 2026, but the ONS attributes this largely to an April 2026 clarification to Home Office Counting Rules requiring incidents involving violence or threats to be recorded as business robbery, rather than a genuine 91% rise in real-world incidents (ONS data, reported by IBTimes UK, 2026). Overall robbery offences rose 10% to 87,362 in the same period, with business robbery specifically up 90.8% from 15,546 to 29,669 offences, again due largely to the recording change (ONS, Crime Outcomes in England and Wales 2025 to 2026, 2026).

For businesses trading in prime retail and luxury sectors, the risk calculus is slightly different again. "In luxury retail the officer is part of the client experience. The same person has to make a genuine customer feel welcomed and a professional thief feel watched, in the same minute, without the store feeling guarded. That judgement is rarer than a licence, and it is what we select for," says Mo Hassan, Managing Director, Priority First.

Vacant commercial units carry a distinct risk set again — squatting, metal theft, fire risk and vandalism — which is why Priority First publishes a dedicated Vacant Property Security Checklist covering the specific steps empty-building owners should take, alongside its Building Security Audit: Self-Assessment guide for occupied buildings reviewing their current security posture.

In-House Security Staff or Outsourced Security Firm: Which Costs Less and Gives More Control?

Choosing between employing security staff directly and outsourcing to a specialist firm is primarily a trade-off between control and overhead. In-house staff offer direct line management and familiarity with one site, while outsourced providers bring licensing compliance, cover for absence, training infrastructure and scalability already built in.

Factor	In-house security	Outsourced security firm
Recruitment & vetting	Business manages BS 7858 screening itself	Provider handles screening before deployment
Cover for sickness/leave	Business must arrange replacement cover	Provider guarantees continuity of cover
SIA licence management	Business tracks renewal dates	Provider manages compliance
Scalability	Slow — requires new hires	Fast — hours can flex up or down
Equipment & technology	Business purchases independently	Often bundled into service (patrol platforms, CCTV)
Cost structure	Fixed salary + NI + pension + management time	Variable hourly/contract rate

The outsourcing model particularly suits businesses that want security bundled with wider building operations. Priority First's facilities management integration means a client gets one accountable provider for guarding, maintenance tasks and compliance tracking on the same platform — the model used at the West Midlands distribution facility, where security and facilities management ran on one system rather than two separate contracts with two separate accountability chains.

Your Commercial Property Security Checklist

• Confirm every proposed officer holds a current, checkable SIA licence before signing.
• Request BS 7858 screening evidence for all personnel assigned to your site.
• Clarify in writing who — landlord, managing agent or tenant — owns responsibility for each zone of the building.
• Ask for proof of delivered coverage (photo-backed, timestamped checkpoints), not just a rota.
• Check public and employers' liability insurance certificates match your premises' risk level.
• Establish the provider's emergency mobilisation time before you need it, not after an incident.
• Review Martyn's Law applicability if your premises falls within scope of the Terrorism (Protection of Premises) Act 2026.
• Reassess guard numbers and patrol frequency against actual incident and footfall data each quarter.

FAQ

Do security guards in London need an SIA licence?

Yes. Any operative carrying out licensable activity — manned guarding, door supervision, CCTV monitoring in public areas or key holding — must hold a valid licence from the Security Industry Authority under the Private Security Industry Act 2001.

How much does manned security cost for a small commercial property in London?

Costs vary by hours and risk, but Priority First's own Chelsea/Knightsbridge contracts for manned security and combined key holding/street patrol packages have run at circa £2,000 a year for commercial premises needing out-of-hours protection. Larger sites with continuous static coverage cost considerably more.

Who is responsible for security in a multi-let commercial building?

Responsibility is usually split by the lease: the landlord or managing agent typically covers common parts, entrances and the perimeter, while tenants secure their own demised space. The Terrorism (Protection of Premises) Act 2026 additionally places a statutory duty on the "responsible person" at qualifying premises, regardless of lease terms.

What is Martyn's Law and does it apply to my building?

Martyn's Law is the common name for the Terrorism (Protection of Premises) Act 2026, which requires responsible persons at qualifying premises to assess terrorism risk and put proportionate protective measures in place. The SIA enforces compliance, and applicability depends on premises type and capacity.

How quickly can a security provider deploy in an emergency?

Response times vary by provider and distance from the site. Priority First has a verified example of deploying an SIA-licensed operative to a Covent Garden break-in within two hours of first contact — the client called at 12:30 and an officer was on site by 14:30.

What's the difference between mobile patrols and static guarding?

Mobile patrols involve a vehicle visiting multiple sites on a schedule, suited to lower-risk premises, while static guarding places an officer permanently on one site. Many London commercial properties combine both — patrols out of hours, static presence during peak footfall.

How do I verify a security company's insurance and accreditation before hiring?

Ask for current public and employers' liability insurance certificates, SIA licence numbers for proposed staff, and evidence of BS 7858 screening. You should also confirm the company's Companies House registration, which any legitimate provider will supply without hesitation.

Securing your commercial property with Priority First

Every issue this guide has covered — unclear landlord/tenant responsibility, unverifiable patrol coverage, rising theft and robbery figures, and the gap between a promised rota and a delivered one — is what Priority First was built to close. The company combines SIA-licensed manned guarding, key holding and alarm response, CCTV monitoring and facilities management under a single accountable contract, rather than leaving a building's security split across unconnected suppliers.

Priority First has secured over £1.6 billion in client assets across construction, commercial, luxury retail, hotel and residential sectors throughout the UK, as published in its Estates Gazette advertisement feature of 1 November 2026, with every checkpoint on its platform requiring a watermarked photograph, GPS location and timestamp to register as complete.

If your commercial property in London needs security that can be verified rather than just promised, get in touch with Priority First for a quote tailored to your building's risk profile — starting with the Corporate Security service built specifically for business premises.

Related Reading

• Vacant Property Management London | Priority First
• Commercial Keyholding Services UK: Costs & Rules 2026
• Commercial Security Services London | 2026 Guide

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