The withdrawal of the United Kingdom from the European Union: deal
In case the Withdrawal Agreement between the UK and the EU enters into force, a transition phase will take effect immediately after the UK’s withdrawal from the EU. During this transition phase, which will last until December 31st, 2020 (but can be extended until December 31st, 2022), free movement of persons will stay in force. This means that international officials who wish to give up their special identity card and register with their municipality of residence will still be able to obtain (the equivalent of) an E or E+ card, with a special mention that they fall under the Withdrawal Agreement. Holders of special identity cards type P who resided legally in Belgium before the end of the transition phase, will continue to be regarded as falling under the Withdrawal Agreement after the end of the transition phase. This means that international officials who reside in Belgium with a special identity card at the end of the transition phase will fall under the Withdrawal Agreement, and can register with their municipality of residence under EU national-equivalent status at any time (this includes the period after the transition phase). The same applies for certain family members of international officials who reside in Belgium under special identity cards before the end of the transition phase. If they choose to register with the municipality, they will be regarded as family members of an EU national (F or F+ card).
UK international officials who arrive on or after January 1st, 2021 will still be entitled to the special identity card. However, if they wish to register with their municipality of residence, they will be regarded as third country nationals. Their rights of entry and residence (under legislation applicable in Belgium) will be part of the negotiations between the UK and the EU starting after the withdrawal of the UK. Belgian immigration law as well as the EU legal migration acquis will be applicable.
For more general information about the procedures and regulations applicable in Belgium, please refer to your municipality of residence, or to the website of the Belgian Immigration Office.