Personally, if the freeloaders who are too !!!! to validate/remain valid get the big elbow im behind that, For too long its been a case of, youre !!!! so go prop up an office in the bowels of Swanwick and do buger all and, think about how great it is that you still get paid like a valid ATCO.
Other option is to knock the pay down by £55k for the job the are actually doing, if they are good enough to do that job of course!!!