Change of https://www.gov.uk/government/publications/making-a-claim-to-an-employment-tribunal-t420

Change description : 2025-11-03 08:00:00: Changed London Central office phone number [Guidance and regulation]

Showing diff : 2025-10-13 07:01:40.899311566 +00:00..2025-11-03 08:00:05.231879620 +00:00

Guidance

Making a claim to an employment tribunal (T420)

How to make a claim to an employment tribunal.

Documents

Details

This guide sets out details about the process.

Read more about making a claim.

Updates to this page

Published 1 April 2018
Last updated 133 OctoberNovember 2025 + show all updates
  1. Changed London Central office phone number

  2. Changed phone number for Leeds and Newcastle

  3. New Midlands phone number

  4. Changed signposting for tribunal offices.

  5. Changed postal address to Loughborough

  6. Added Welsh HTML version.

  7. Converted the English guide into HTML.

  8. Leeds tribunal address change

  9. Updated contact information

  10. Revised guidance document in English and Welsh.

  11. Details for Glasgow ET updated.

  12. Revised T420 guidance, English and Welsh.

  13. Glasgow centre has changed address.

  14. Time limit guidance has been updated.

  15. Revised T420 due to a change of address in Newcastle.

  16. Added Welsh T420 due to change of address for Employment Appeal Tribunal.

  17. Added a revised T420 that includes GDPR information.

  18. First published.

Sign up for emails or print this page

Update history

2025-12-01 07:55
Acas settlement window changed to 12 weeks.

2025-11-03 08:00
Changed London Central office phone number

2025-10-13 08:00
Changed phone number for Leeds and Newcastle

2025-09-01 08:00
New Midlands phone number

2025-06-25 15:26
Changed signposting for tribunal offices.

2025-05-16 10:17
Changed postal address to Loughborough

2025-05-09 07:51
Added Welsh HTML version.

2024-02-05 09:00
Converted the English guide into HTML.

2023-12-12 12:12
Leeds tribunal address change

2023-10-12 17:04
Updated contact information