Last updated: 11 September 2026

BS 7858 checklist: what every UK security employer needs to verify

A BS 7858 checklist is the set of screening steps a security employer must complete to comply with BS 7858:2019, the British Standard for screening individuals working in a secure environment. It covers identity, a minimum five-year employment history, unexplained gaps, referees, and financial and criminal record checks — every item held in a file for audit.

Key Takeaways

• BS 7858 requires a minimum five-year employment history to be verified, with all gaps in employment, education, or training identified and explained, according to BizGrow Holdings (2026).
• A BS7858 check is valid for five years from the date it is issued and should be kept by the employer for seven years after the employee leaves the company, per Reed Screening (2026).
• The current standard, BS7858:2019, came into effect at the end of September 2020, replacing the revoked BS7858:2012 revision, according to CRI Group (2026).
• The SIA introduced its Approved Contractor Scheme (ACS) in 2006 as a recognised quality hallmark for the private security industry, per CQI/IRCA (2021).
• A commercial BS7858 screening package from Reed Screening costs £149 + VAT per candidate, per Reed Screening (2026) — a useful benchmark when budgeting a screening programme.

What is BS 7858?

BS 7858 is the British Standard code of practice for screening individuals working in a secure environment, published by the British Standards Institution (BSI). It sets out the process employers and screening providers must follow to check a candidate's identity, employment history, character references and financial background before they're deployed to a secure site such as a bank, data centre, retail estate or residential block.

The standard has moved through several revisions. BS 7858 was introduced in 2013 and was updated in September 2019, according to Lexology (2020). More precisely, the new code of practice BS7858:2019 came into effect at the end of September 2020, substituting the revoked BS7858:2012 revised standard, which was rescinded on 31 March 2020, per CRI Group (2026).

BS 7858 sits alongside — but is distinct from — a Disclosure and Barring Service (DBS) check. A DBS check reveals criminal record information held by the Home Office. BS 7858 is broader: it verifies identity, employment continuity, character, and financial standing, and a DBS check is normally just one component sitting inside the wider BS 7858 file.

The BSI's own product page for BS 7858:2019 describes the standard's purpose plainly: it exists so organisations can make an informed decision on employing someone in a secure environment, using consistent, auditable evidence rather than a gut feel or a CV taken on trust.

The full BS 7858 checklist: what must be verified

Every BS 7858 screening file needs to cover the same core areas, regardless of which screening provider or in-house team runs the check. Below is the checklist a security employer, ACS assessor, or client audit will expect to see completed and evidenced, item by item, before an officer is rostered onto a secure site.

Identity and right to work

• Confirm a current, government-issued photo ID (passport or driving licence) and cross-check it against the candidate's application.
• Verify right to work in the UK in line with Home Office guidance, retaining copies of the documents checked.
• Confirm the candidate's address history, cross-referenced against credit reference agency data or utility bills where available.

Five-year employment and activity history

• Trace employment, education and any unemployment periods back a minimum of five years. This is the anchor requirement of BS 7858: BS 7858 requires a minimum five-year employment history to be verified, with all gaps in employment, education, or training identified and explained, per BizGrow Holdings (2026).
• Obtain written or verbal confirmation from each employer covering dates, role and reason for leaving.
• Investigate and document any gap — travel, caring responsibilities, self-employment, unemployment — with the candidate's own explanation on file, not just a blank line.

Character references

• Obtain at least one character reference, typically from someone who has known the candidate for a defined period, independent of the employment references.
• Cross-check referee contact details against independent sources rather than accepting only what the candidate supplies.

Criminal record and financial checks

• Run a Basic DBS check (or, where the role and setting justify it, a Standard or Enhanced check), retaining the certificate reference and issue date.
• Complete a credit reference check covering financial soundness, run through a recognised credit reference agency.
• Screen against relevant sanctions or fraud-prevention databases where the client contract or sector requires it.

SIA licence and role-specific checks

• Confirm the candidate's Security Industry Authority (SIA) licence is valid, current, and matches the licensed activity being performed (e.g. door supervision, CCTV operation, close protection).
• Record the licence number and expiry date and set a renewal reminder well ahead of the deadline.
• Check any additional sector-specific requirements, such as counter-terrorism awareness training for Martyn's Law-qualifying sites.

File completion and retention

• Compile every check into a single auditable screening file, dated and signed off by whoever completed each stage.
• Store the file for the correct retention period. A BS7858 check is valid for five years from the date it is issued and should be kept by the employer for seven years after the employee leaves the company, per Reed Screening (2026).

Who needs a BS 7858 checklist, and is it legally required?

BS 7858 screening applies to anyone deployed into a secure environment, most commonly security officers, keyholders, CCTV operators, door supervisors and mobile patrol staff. It also increasingly extends to facilities management staff with access to sensitive sites, and cleaning or maintenance contractors working in bank vaults, data centres or government buildings.

Strictly, BS 7858 is a voluntary British Standard, not a statute. But in practice it functions as mandatory for most of the industry. GOV.UK's guidance on SIA approved contractors and outsourced pre-employment screening confirms that pre-employment screening must conform to BS 7858 for a firm to remain an SIA Approved Contractor. A separate Freedom of Information response published on GOV.UK confirms that Approved Contractor Scheme (ACS) members must screen to BS7858 or an equivalent standard.

Client contracts routinely make BS 7858 compliance a condition of the deal, whether or not the contractor holds ACS status. Insurers, too, increasingly ask for evidence of BS 7858 screening records as part of professional indemnity and liability cover. So while no single Act of Parliament forces a private security firm to screen to BS 7858, the practical effect — through ACS, tenders and client contracts — is that most of the sector treats it as non-negotiable.

The ACS scheme was introduced by the SIA in 2006, per CQI/IRCA (2021), and today the highest-performing contractors go further still. The top 15% of approved contractors under the SIA Approved Contractor Scheme receive the Pacesetters designation, per Coredinate (2026) — a tier that clients increasingly look for at tender stage precisely because it signals screening and management discipline well above the bar.

In-house screening vs outsourced BS 7858 checks

Security employers generally choose between running BS 7858 screening in-house or outsourcing it to a specialist provider. Both routes can produce a compliant file — the difference is speed, cost per candidate, and how much internal resource it consumes.

Neither route removes the employer's obligation to hold the file and prove it at audit. Whichever you choose, the file needs to survive an ACS assessor's scrutiny or a client's own compliance audit — and that means the checklist above has to be complete, not just started.

"A lapsed licence or an incomplete screening file walking onto a client site is how contracts end. Track vetting to a clearance date and hold people off the roster automatically until every check is clear — deployment discipline shouldn't depend on someone remembering." — Mo Hassan, Founder, Pulse (on BS 7858 vetting)

That's the practical failure mode most firms run into: not a bad screening provider, but a good screening record that sits in a folder nobody checks before rostering day. Pulse Operations's compliance runway tracks SIA licensing, BS 7858, DBS, right to work, training and statutory building compliance against a single expiries calendar, so a candidate can't be rostered onto a shift once a check has lapsed.

What triggers rescreening, and how long does BS 7858 take?

BS 7858 checks aren't a one-off event; they have a defined shelf life and specific triggers for renewal. A five-year clearance doesn't mean five years of silence — most employers rescreen sooner if a role, site or client contract demands it.

Common triggers for rescreening include a break in employment of more than a set period (often three or six months, depending on the employer's own policy), a change of employer under TUPE transfer, or a specific client contract requiring fresher checks than the standard five-year window. GOV.UK's TUPE guidance for the SIA Approved Contractor Scheme sets out how BS 7858 obligations carry across when security staff transfer between contractors.

Turnaround time varies with the complexity of a candidate's history: someone with a stable five-year UK employment record and responsive referees typically completes screening faster than someone with overseas employment, self-employment periods, or unresponsive referees, both of which routinely stretch the process while gaps are chased and explained.

Your BS 7858 checklist

Use this as a working audit list before any candidate is deployed to a secure site:

• Verify photo ID and right to work, retaining copies on file.
• Trace five years of employment, education and any unemployment, with every gap explained in writing.
• Chase and document employer references for each role in that five-year window.
• Obtain at least one independent character reference.
• Run the appropriate level of DBS check and record the certificate reference.
• Complete a credit reference check through a recognised agency.
• Confirm the SIA licence number, category and expiry date, and set a renewal alert.
• File and date every stage, and store the completed record for seven years after the employee leaves, per Reed Screening (2026).

FAQ

What is included in a BS 7858 checklist?

A BS 7858 checklist includes identity and right-to-work verification, a minimum five-year employment history with gaps explained, character references, criminal record checks (typically DBS), a credit reference check, and confirmation of a valid SIA licence where the role requires one. Every stage is dated and filed as evidence.

What is the difference between BS 7858 and a DBS check?

A DBS check only reveals criminal record information, while BS 7858 is the full screening standard that a DBS check sits inside. BS 7858 also verifies five years of employment history, identity, character references and financial standing — a DBS certificate alone doesn't satisfy BS 7858 on its own.

How long does BS 7858 screening take to complete?

There's no single fixed turnaround under the standard itself; it depends on how quickly employer references, DBS results and any gap explanations come back. A straightforward UK-based five-year history with responsive referees moves faster than a case involving overseas employment or unresponsive former employers.

How far back does BS 7858 employment history checking go?

BS 7858 requires a minimum five-year employment history to be verified, with every gap in employment, education, or training identified and explained, according to BizGrow Holdings (2026). Some employers or client contracts extend this further for higher-risk roles.

Is BS 7858 screening a legal requirement?

BS 7858 is a British Standard, not a statute, so it isn't a legal requirement in the way health and safety law is. In practice, it functions as mandatory for most security firms because SIA Approved Contractor status, client contracts, and insurers all expect compliance with it.

How long is a BS 7858 check valid for?

A BS7858 check is valid for five years from the date it is issued, and the employer should keep the record for seven years after the employee leaves the company, per Reed Screening (2026).

How does BS 7858 relate to SIA Approved Contractor Scheme (ACS) status?

ACS members are required to screen staff to BS 7858 or an equivalent industry standard, according to GOV.UK's published guidance. The SIA introduced ACS in 2006 as a recognised quality hallmark, per CQI/IRCA (2021), and firms in the top 15% receive the Pacesetters designation, per Coredinate (2026).

Keeping your BS 7858 checklist audit-ready with Pulse Operations

A completed BS 7858 file is only useful if it's still valid the day an officer clocks on — and the item most audits and client checks catch out isn't a missing reference, it's a licence or clearance that quietly lapsed while nobody was watching the calendar. That's the exact gap Pulse Operations's compliance runway closes: SIA licensing, BS 7858, DBS, right to work, training and statutory building compliance sit on one expiries timeline, and a candidate can't be rostered onto a live shift once a check has expired.

The same discipline runs through how Pulse Operations was built. Priority First, the founding team's own London security and facilities operation, mobilised three buildings onto Pulse in a single July fortnight — site notes, checkpoints and induction history live in the platform before officers arrive, with compliance status checked automatically rather than chased by phone. Pulse was built inside that operation before being opened to other security and FM firms, and that origin is always disclosed rather than dressed up as an arm's-length case study.

If your firm needs to prove screening compliance at tender, at audit, or to a client asking "show me the file" — Pulse Operations's guide to winning your next security tender explains exactly what BS 7858 evidence buyers expect to see. Get in touch with Pulse Operations to see how the compliance runway keeps your BS 7858 checklist audit-ready without a spreadsheet.

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