Doctors must not work in General Practice until they receive official written notification from the NHS SBS informing that they are on the Performers List. The Performers list is administered centrally by Primary Care Support England. Details of how to apply can be found here: Primary Care Support England
Please note that you will not be able to remain on the performers list if you have not worked in the NHS Devon area in the last 12 months. You will be notified in writing prior to being taken off the list.
Work as a locum is currently pensionable. You will need a form A completed for each practice every month, and send these with a single form B every month to the SBS. See the entry under pensions for more details, forms etc