Factbox-Brexit and the City of London: what changes and when

FILE PHOTO: Canary Wharf can be seen in the distance as a person walks along a footbridge, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, December 14, 2020. REUTERS/Henry Nicholls

LONDON (Reuters) - Britain, which left the European Union in January, loses full access to the bloc under transition arrangements that end at 2300 GMT on Dec. 31.

The 27-nation EU is Britain's biggest financial services customer, worth about 30 billion pounds ($40 billion) a year. The relationship helped cement London's position as one of the world's biggest financial centres and as a major contributor to British tax revenues.