The UK’s post-EU medical device regulatory system has an important deadline approaching. Manufacturers with active implantable medical devices, Class III medical devices, Class IIb implantable medical devices should register their products with the Medicines and Healthcare products Regulatory Agency (MHRA) by 1st May 2021. The use of the GMDN Code in the MHRA register is now a requirement for all products. There are further deadlines for registering lower-risk products throughout this year.