Well as of 1st January 2022 all classes of medical devices will need to be registered with the MHRA. We have already found companies that have not registered devices and therefore cant sell them in the UK. The MHRA have got a register which lists the companies, however It is not easy to search and find particular devices. The next hurdle will be the UKCA and UK registered person requirements that come into effect on the 30th June 2023.
https://aic.mhra.gov.uk/era/pdr.nsf/name?openpage&start=1&count=200.