Wikipedia
Brit-Cit
Brit-Cit is a huge fictional city in the fictional universe of British comics 2000 AD and Judge Dredd. The city covers the south of England and bordering on the Black Atlantic. It also has jurisdiction over Cal-Hab (Scotland), the South Wales Peninsula, and Murphyville (Ireland). It is the setting for many spin-off strips, including Armitage, Cal-Hab Justice, and Strange & Darke.
In the first mention of Britain in Judge Dredd, set in 2100, there is a reference to Brit-Territories.