Employment Background Checks: What a DBS Check Misses

Updated 5 October 2026 by Investigation Bureau

Many UK employers treat a clean DBS check as proof that a candidate has been vetted. It is not. A basic DBS discloses unspent convictions and conditional cautions, and nothing more. It shows no civil judgments, no directorships, no insolvencies, no tribunal history, no invented degree and no fictional job at the top of the CV. Almost everything that goes wrong with a hire sits in records a DBS never touches.

This guide covers what the standard checks really show, what a proper background check adds to them, and where the legal lines are for UK employers.

What the standard checks cover

Basic DBS. Unspent convictions and conditional cautions only. It is available for any role. Spent convictions, civil matters and financial history do not appear.
Standard and Enhanced DBS. Fuller criminal disclosure, but only for roles the law makes eligible (regulated activity and certain professions). Requesting one for an ineligible role is itself unlawful. Neither level says anything about money, litigation or honesty.
Right-to-work check. Immigration status. It confirms the person may work. It does not tell you whether you would want them to.
References. Chosen by the candidate, and more and more often limited by policy to dates and job title. A reference confirms that someone was at an employer. It does not say how they left.

None of these tests what the CV claims, and the CV is where the risk lies. Qualification fraud and inflated job titles persist for one simple reason: hardly anybody verifies at source.

What a professional background check adds

A proportionate employment screen, carried out as an investigation and not as a single database search, typically verifies the following.

Career history at source. Each employer, role and date is confirmed against the record, and gaps are explained, not smoothed over. In screening work the usual finding is not a lie but an omission: the short role that ended badly and never made it onto the CV.
Qualifications with the issuing body. The university, institute or register is asked directly. A PDF of a certificate proves little, because forging certificates is now an industrial process. Verification at source defeats it with one enquiry.
Financial and civil footprint. County court judgments, bankruptcy and IVA history. For senior roles and roles that handle money, the person's corporate record as well: directorships past and present, dissolved companies, disqualifications. A candidate who would handle your money while drowning in their own debts is a risk you are entitled to weigh.
Litigation and tribunal appearances. Patterns of disputes, brought or defended, in the public record.
Adverse media and lawful open-source research. What the public record and the candidate's own public conduct show, with sanctions screening where the trade makes it relevant.
Conflicts of interest. The undisclosed directorship of a competitor or supplier. The family link to the vendor whose invoices they would be approving.

For board-level and investment-critical appointments this becomes full executive due diligence: the same disciplines, taken deeper.

The legal position for UK employers

All of this is lawful when it is done properly, and impossible to defend when it is done casually. The framework is UK GDPR.

Lawful basis and proportionality. Screening rests on legitimate interests, so the checks must match the real risk of the role. Verifying a finance director's insolvency history at source is proportionate. Doing the same for a temporary warehouse worker is not.
Transparency. Candidates should be told that screening takes place, in the application pack or the offer letter. It is fair, serious sectors expect it, and now and then the reaction to it tells you something.
Criminal records have their own strict rules. Criminal history comes through the DBS regime and its eligibility rules, and by no other route. A professional investigator will refuse to "find out about convictions" outside it. Treat any provider who offers as a serious liability.
No theft of private data. Bank records, medical history and private messages are off limits to everyone, employer and investigator alike. Everything described above comes from open sources, licensed data and verification at source.

Reports are written evidence first: what the register proves, what a source confirmed, what remains unverified. That allows an adverse finding to be put to the candidate fairly, and a withdrawn offer to be defended if it is challenged.

When to screen, and when to go deeper

Every hire. Identity, right to work, CV verification of the last two roles, and a qualification check where a qualification is claimed. The cost is modest and it catches most fabrication.
Roles handling money, keys or privileged data. Add the financial and civil footprint. This is the level at which employers who later need a workplace investigation most often wish they had screened. Employee fraud is far cheaper to keep out at the door than to investigate three years in.
Senior, board and investment appointments. Full executive due diligence, quoted as a project through our corporate investigations service.
Concerns about someone already employed. Screening an existing employee after suspicion has arisen is a different and more delicate exercise, with legal considerations of its own. Take advice before you act, then investigate properly.

Frequently asked questions

Do I need the employee's consent before running a background check?

You need a lawful basis and transparency, and that is not the same as consent. Legitimate interests screening that is disclosed in your recruitment documents and proportionate to the role does not depend on consent. Criminal record checks are different: they run only through the DBS regime, which has its own consent and eligibility rules.

How much does professional screening cost?

It depends on depth. Basic verification (identity, employment and qualification checks) is priced per candidate. Investigative screens for sensitive roles are quoted per role, and executive due diligence as a fixed project fee. Every quote is fixed in writing before any work begins, after a free scoping conversation. Screening is one of the few hiring costs that is small beside the mistake it prevents.

A check found something. Can we simply withdraw the offer?

Usually you may, but do it properly. Put the finding to the candidate, because facts sometimes have an innocent explanation. Keep the decision tied to a risk that is relevant to the role, and document both steps. Where the finding points to fraud in the application itself, that documentation matters twice over.

Can you check someone we already employ?

Yes. This usually happens once concerns have come to light. It is handled as an investigation, not a screen, with employment law process kept in view throughout, and normally through our workplace investigations service.

Screen the hire you cannot afford to get wrong. Speak to an investigator about proportionate screening. The first conversation is free, confidential and without obligation: start a confidential enquiry.