Incidents & Accidents · Best Practice · Construction

Witness Statement Form

A form for collecting witness accounts following an accident or incident. Witness statements should be taken as soon as possible after the event and recorded in the witness own words to preserve an accurate record.

Last reviewed: 29 March 2026 — This guide reflects UK law as of this date. MHSWR 1999 remains current with no amendments enacted as of 29 March 2026. Next scheduled review: 29 March 2027.

1. Witness Statements — Capturing Contemporaneous Evidence

One of the most valuable documents in any incident investigation. A witness statement captures in signed form what a person observed at the time of an incident — before memory fades, before accounts are harmonised, before the event is reconstructed from later recollections. The evidential value of a statement taken at 3pm on the day of the incident is significantly higher than one taken a week later.

The site manager's priority after any significant incident: collect witness details and begin the statement process before anyone leaves site. Agency workers, delivery drivers, and visitors may be impossible to trace once they have departed.

Each witness must be interviewed separately — group discussions contaminate individual accounts

When witnesses discuss events together before giving statements, accounts converge on a shared narrative. Details one witness observed clearly may be omitted. A witness who observed something contradicting the emerging narrative may stay silent. Interview individually, immediately, in separate locations.

2. Witness Statement Form — Structure

Field	Content
Witness details	Full name, employer, role/trade, contact details.
Date/time of statement	When the statement was taken. By whom.
Date/time of incident	Witness confirms when the incident occurred.
Location	Where the witness was when they observed the incident.
What they observed	Free narrative in the witness’s own words: what they saw, heard, or were aware of before, during, and after the incident. Factual observation only, not conclusions.
Sequence of events	In chronological order where possible.
Anything unusual	Did the witness notice anything unusual before the incident? Any prior warning or near miss?
Their actions	What did the witness do after observing the incident?
Additional information	Anything else the witness considers relevant.
Declaration	“I confirm this statement is a true and accurate account of what I observed.” Witness signature. Date. Print name.
Interviewer signature	Person taking the statement signs and dates.

3. Common Mistakes

Leading questions shaping the witness’s account

The interviewer must avoid suggesting answers. “You did see the worker run without looking, didn’t you?” versus “Can you describe what you observed near the excavation?” The statement must reflect the witness’s actual observation, not the investigator’s beliefs.

Not taking the statement at the time

Relying on later recollection significantly reduces evidential value. The passage of time, discussions with colleagues, and media coverage all affect memory. Taking witness statements must be an immediate priority above most other tasks after ensuring safety.

Not distinguishing observation from conclusions

The statement should record factual observations. “I saw the worker fall from the scaffold” is an observation. “The scaffold was unsafe and caused the fall” is a conclusion. Conclusions belong in the investigation report, not in witness statements.

Allowing witnesses to compare accounts before giving statements

Group discussions contaminate individual accounts. Workers naturally gather and discuss what happened. The site manager must interrupt quickly, separate witnesses, and take individual statements in separate locations simultaneously if possible.

Not keeping statements securely

Witness statements contain personal data and are potentially disclosable in civil and criminal proceedings. They must be stored securely in accordance with GDPR. Access should be limited to the investigation team, legal advisers, and senior management. Copies sent to insurers should be marked as privileged if proceedings are anticipated.

4. Frequently Asked Questions

Can a witness be compelled to give a statement?▾

Employees have a duty to cooperate under MHSWR. However, they cannot be compelled to give statements that might incriminate them in criminal proceedings — the right against self-incrimination applies. Most workers cooperate fully. If criminal prosecution is anticipated, seek legal advice before taking statements.

Can witness statements be used in civil litigation?▾

Yes — they are potentially disclosable. Statements should be prepared as if they will be read by a court: factual, signed, dated, and free from speculation. Documents prepared specifically for the purpose of obtaining legal advice may be subject to legal professional privilege.

What if a witness refuses to sign?▾

Note the refusal. Record the account as best you can in an unsigned record noting the date, time, and the refusal to sign. An unsigned account is still valuable but less compelling as evidence. The refusal itself may be relevant information.

Should the injured person give a statement?▾

Yes — it is essential. However, timing must be sensitive: if the person is distressed, their welfare is the priority. A statement can be taken within hours once they are ready. It should be treated the same as any witness statement — factual, unled, in their own words. The person should not be pressured to provide an account inconsistent with their recollection.

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