Contacting the Office of the Immigration Services Commissioner

OISC contact details

To contact the OISC, first use our online portal to ask a query or to make a complaint.

The Customer Service Unit is also available on They will pass on your query to the correct part of the organisation.

For media enquiries only, please email:

You can call us on 0345 000 0046 between 9am and 4pm, Monday to Friday, except public holidays.

To send anything by post, please address to:

PO Box 567

Applications for registration and continued registration should be completed online using our electronic application forms (How to complete and upload OISC electronic application forms - GOV.UK ( Clear instructions on how to do this are provided with each form.

Published 7 February 2020
Last updated 25 January 2024 + show all updates
  1. New Press enquiry email address added.

  2. Includes details of the OISC online portal and the new hours for our Customer Service Unit.

  3. The PO Box address for the OISC has been added

  4. New contact process for the OISC

  5. Updated information on how to contact the OISC and how to make payments in conection with applications.

  6. Adviser Finder is back up again

  7. Updated info

  8. Information about the OISC during the National Emergency

  9. Update message re the register and adviser finder

  10. First published.