Brussels British Community Association
The Brussels British Community Association (BBCA) is a focal point for the British community in the Brussels area, open to organisational and individual membership. The role of the BBCA is:
The BBCA covers Brussels plus the provinces of Brabant , Hainaut, Liege, Namur and Luxembourg. The Antwerp British Community Association covers the northern part of the Belgium http://www.abca-antwerp.be/
UK nationals resident in Belgium before 31 December 2020 need to apply for a new residence card (M-card) under the Brexit Withdrawal Agreement.
You must apply for the new card by 31 December 2021.
There have been technical difficulties in the initial deployment of the M-card, but these appear to have been resolved.