An overview of the relationship between the UK and the EU in criminal matters prior to Brexit; the situation during the transition period; and what may come afterwards.
“On January 31st, 2020, the United Kingdom withdrew from the European Union, and their mutual relationship entered in a phase of transition. After 47 years of membership, the withdrawal led to a series of changes in various policy areas, in which the UK, as an EU Member State, cooperated with its counterparts. This notably concerns police and judicial cooperation in criminal matters, and the consequences of Brexit in this particular field will be our focus.“
Brexit and its consequences for cooperation in criminal matters (European Law Blog, link)