Guide

FOI 20 Working Days Explained

How to count a UK FOI 20 working day response deadline correctly under the Freedom of Information Act 2000.

Quick note: This guide summarises common rules and links back to a calculator. Always check official ICO guidance for your specific case.

Quick answer

Under section 10(1) of the Freedom of Information Act 2000, a public authority must respond to an FOI request promptly, and in any event within 20 working days following the date of receipt. The clock starts on the first working day after receipt. Weekends, UK bank holidays, and public authority closure days are excluded from the count. If the 20th working day falls on a weekend or bank holiday, the deadline moves to the next working day.

Worked example: counting 20 FOI working days

StepDateDay typeCounts as working day?
Request receivedWed 14 May 2025Working dayNo — clock starts the day after
Day 1Thu 15 May 2025Working dayYes
Day 2–4Fri 16 – Tue 20 May 2025Working daysYes (weekend 17–18 May skipped)
Day 5–9Wed 21 – Tue 27 May 2025Working daysYes (Spring bank holiday 26 May skipped)
Day 10–14Wed 28 May – Tue 3 Jun 2025Working daysYes
Day 15–19Wed 4 – Tue 10 Jun 2025Working daysYes
Day 20 (deadline)Wed 11 Jun 2025Working dayYes — deadline date

When the clock starts

The ICO’s guidance is clear: day one is the first working day after the request is received. If a request arrives on a Monday, day one is Tuesday. If it arrives on a Friday, day one is the following Monday (or Tuesday if Monday is a bank holiday). If it arrives on a Saturday, Sunday, or bank holiday, the request is treated as received on the next working day, and day one is the working day after that.

Extensions and pauses

The 20 working day clock can be extended in specific circumstances:

FOI vs EIR deadlines

Requests for environmental information are handled under the Environmental Information Regulations 2004 (EIR), not the FOI Act. The EIR deadline is also 20 working days but can be extended to 40 working days for complex or voluminous requests (regulation 7). If your request relates to environmental matters, the authority should process it under EIR.

What happens if the deadline is missed?

If a public authority fails to respond within 20 working days (or within an agreed extension), the requester can complain to the Information Commissioner’s Office (ICO). The ICO can issue a decision notice requiring the authority to respond. In persistent or serious cases, the ICO can take enforcement action. The authority also risks reputational damage and, in some cases, legal challenge through the First-tier Tribunal (Information Rights).

Exemptions that may extend or replace the deadline

Beyond the public interest extension, some exemptions in Part II of the FOI Act affect how long an authority has to respond:

Practical steps to stay compliant

  1. Record the receipt date and time. The clock depends on knowing exactly when the request arrived.
  2. Identify day one correctly. Use =WORKDAY(receipt_date, 1, holiday_range) in Excel, or an FOI deadline calculator, to find the first working day after receipt.
  3. Count 20 working days. Use an FOI deadline calculator that includes the current year’s UK bank holidays.
  4. Monitor for pauses. If you issue a clarification request or fees notice, note the date and restart the clock from where it paused.
  5. Respond promptly. The Act requires a response “promptly” as well as within 20 working days. Do not wait until day 20 if you can reply sooner.
  6. If you need an extension, inform the requester before the original deadline expires. Late notification of a public interest extension can lead to a complaint to the ICO.

Key takeaways

References