Contact us

Learn more about how you can contact the Inquiry.


Telephone number: 020 7215 2555

The Inquiry will provide a freephone telephone number in due course. If you would like to speak to us, please call the number provided. If you'd like us to call you back, please ask for a call back when the phone is answered or leave a voice message requesting a call back and leave your contact details. Alternatively, please send a message to the Secretariat inbox with “CALL BACK REQUEST” in the subject line. We aim to respond within 2 days.

Send an email

For general enquiries, contact us at

Contact by post

Post Office Horizon IT Inquiry
1 Victoria Street,

The Secretariat aims to respond to email enquiries within 5 working days of receipt, and to postal correspondence within 14 working days.

Media enquiries

For media enquiries, contact us at Or call 07876 006117.