The UK government announced that the new UK legislation (and the original UKCA Marking deadline) of 1 July 2023 would be postponed. Further, the MHRA will continue to recognize European CE Marking for an extended transition period: 2028-2030, depending on the type of device.
This does not exempt manufacturers from appointing a UK Responsible Person (if non-UK-based) and registering their devices with the MHRA. It simply means the MHRA will accept device registrations based on CE Marking for a longer period of time.
NOTE: the postponement does not mean companies cannot UKCA Mark until the deadline. Manufacturers may opt to voluntarily UKCA Mark, if they so wish; however, they are not obligated to do so.
More information on the postponement is available here.