From November 2020 the official address of the Flag Institute has changed.
Please write to: The Flag Institute, 161 High Street, Kingston-upon-Hull HU1 1NQ, United Kingdom.
COVID-19 update: at present this mailbox is unstaffed.
Please email the Flag Institute for any urgent enquiry.
The Flag Institute was formerly based at the Chester home of its founder Dr William Crampton.
The official address then moved to The Naval Club in London, and from 2014 to 2020 to HQS Wellington in London.