HSE inspections of construction sites are not always forewarned. The majority of proactive inspections happen without prior notice, and reactive visits — triggered by a complaint, a reported accident, or a referral — can happen the same day the notification reaches the HSE. If you're treating compliance as something you'll sort out if and when an inspector arrives, the sequencing is the wrong way around.
Understanding what an inspection actually involves helps you prepare properly, rather than panic-reviewing paperwork that should have been up to date all along.
What triggers an HSE construction inspection
HSE inspectors cover a large number of sites with limited resource, so visits tend to be targeted. Proactive inspections often focus on higher-risk activities — groundworks near live services, working at height, deep excavations, demolition. They also target sectors or project types where enforcement patterns suggest systemic issues.
Reactive visits are triggered by: a RIDDOR-reportable incident, a complaint from a member of the public or a worker, a referral from another regulator or the fire service, or intelligence from other sources. A notification to the F10 register doesn't automatically trigger an inspection, but it does mean HSE knows your project exists.
What an inspector can and cannot do
HSE inspectors have significant powers under the Health and Safety at Work Act 1974. They can enter any premises at any reasonable time (or any time if they believe a dangerous situation exists) without giving advance notice. They can examine records, take samples, take photographs, and interview workers in private — that last one matters, because workers have the right to speak to an inspector away from management. Attempting to prevent this, or being seen to coach workers on what to say, makes things considerably worse.
Inspectors can issue two types of formal notice: an improvement notice, which requires you to address a specific breach by a set date, and a prohibition notice, which stops the relevant activity immediately until the issue is resolved. A prohibition notice issued on a Thursday afternoon, covering a significant part of the works, can cost more than any fine — and inspectors use them when they believe there's a risk of serious injury.
What inspectors look for on arrival
The first thing an inspector will assess is the general state of the site — welfare facilities, housekeeping, obvious physical hazards. A site with skips overflowing, unclear demarcation from public areas, or workers at height without visible edge protection signals that the management behind the scenes is probably in a similar state.
After the site walk, the evidence request typically covers:
CDM documentation. On a notifiable project: the F10 reference, the Construction Phase Plan, evidence of principal designer appointment, and the Health and Safety File if the project is near completion. The CPP should be specific to the site — not a generic template with the project name changed at the top.
Induction records. Who has been inducted onto the site, when, and what they were told. Gaps here — workers whose names appear on the daily log but not in the induction register — are a problem.
Toolbox talk records. These need to show the topic, date, who conducted it, and which workers attended with signatures or a printed attendance sheet. A file of unsigned templates doesn't demonstrate that the talks happened.
Subcontractor RAMS. The inspector will want to see that risk assessments and method statements have been submitted by subcontractors, that they're specific to the work on this site, and that there's evidence you reviewed and accepted them before work started.
Incident log. All near misses and incidents recorded, with RIDDOR-reportable ones clearly identified. An incident log with very few entries on a large project isn't reassuring — it suggests near misses aren't being captured.
CSCS cards and competency records. Particularly for plant operators, scaffolders, and other licence-to-practice roles. Inspectors do spot-check workers on site.
Worker interviews
An inspector may ask to speak with workers individually. They might ask: Have you been inducted? Do you know the emergency procedure? Have you done a toolbox talk recently? What would you do if you spotted a safety issue?
Workers who can't recall being inducted, don't know the site emergency procedures, or say they've never had a toolbox talk — regardless of what the paperwork says — create an immediate credibility problem. This is why compliance can't just be about records; it has to reflect what's actually happening on site.
After the inspection
Most inspections that don't result in formal notices end with verbal advice or a letter identifying areas for improvement. These letters carry weight — if there's a subsequent incident in an area the inspector flagged, the company's culpability is materially affected by whether they acted on the advice.
If an improvement notice is issued, you have a right of appeal to an employment tribunal, but the notice remains in effect unless it's suspended pending appeal. The more practical response is usually to address the issue and demonstrate compliance by the deadline.
The evidence problem
The companies that struggle most during inspections aren't necessarily running dangerous sites — they're often running sites where the work is being managed reasonably well but the evidence of that management is disorganised, incomplete, or inaccessible. When an inspector asks for the toolbox talk records for the past three months and the answer is "they're in the site office, I think, hang on", the impression that creates sets the tone for the rest of the visit.
SiteProof is designed so that daily logs, toolbox talks, checklist completions, incident records, and induction registers are all maintained digitally and are immediately accessible. If an inspector arrived this afternoon, you could hand over a complete evidence pack for the project in minutes rather than searching through folders. That's a fundamentally different conversation to have.
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