DIFFICULT UK PPL (H) REVALIDATIONS?

[TOT]

I AM BOTH FIXED WING AND HELICOPTER RATED. IT SEEMS THAT SUBJECT TO AN APPOINTMENT ANY OF MY FIXED WING INSTRUCTORS CAN CARRY OUT AN LPC. HOWEVER IT SEEMS THAT ORDINARY HELICOPTER INSTRUCTORS CANNOT? DUE TO LACK OF AIRCRAFT, INCLEMENT WEATHER AND SHORTAGE OF TRE'S I AND A NUMBER OF FRIENDS HAVE HAD GREAT DIFFICULTY GETTING AN LPC. IS THIS ALWAYS GOING TO BE THE CASE?, IS THIS UNFAIR ON HELICOPTER INSTRUCTORS?