Anybody aware what happens if you let you current class 1 expire? Do you have to do the full on initial test at £400 again, or can you defer a renewal by say a year.
I.e. if you have a class 2 also, and don't need the class 1 for the next year, can you save yourself a few £££, assuming you are confident that you are still class 1 fit in the lapse period?