Just found this on the Post Office website
https://www.postoffice.co.uk/international-driving-permit
In the event of a no deal Brexit, International Driving Permits will be required to drive in some EU countries from March 28th. From February 1st Post Office will be providing this new IDP service offering the 3 versions (1926, 1949 and 1968), across 2,500 branches. The required IDP for your country of travel can be purchased up to 3 months in advance so you can plan your travels. This web page will be updated to help you choose the correct IDP and additional support can be provided at Post Offices offering the IDP service.
https://www.postoffice.co.uk/international-driving-permit
In the event of a no deal Brexit, International Driving Permits will be required to drive in some EU countries from March 28th. From February 1st Post Office will be providing this new IDP service offering the 3 versions (1926, 1949 and 1968), across 2,500 branches. The required IDP for your country of travel can be purchased up to 3 months in advance so you can plan your travels. This web page will be updated to help you choose the correct IDP and additional support can be provided at Post Offices offering the IDP service.