The ECJ rendered today, 10 December 2018, its judgement in case C 621/18
Wightman in relation to the question whether the UK can
unilaterally withdraw its Brexit notice of 29 March 2017.
There are three key take aways from that judgement:
1. The UK can unilaterally withdraw the Brexit notice prior to
(i) the coming into force of the Withdrawal Agreement, or, if there
is no Withdrawal Agreement concluded between the EU27 and the UK,
(ii) prior to 30 March 2019, or, if there is an extension of the
two year sunset period, (iii) prior to the end of such extension of
the sunset period. The timing for a declaration for an Exit from
Brexit is now clear; it had not yet been clear in the
Advocate General Opinion of 4 December 2018.