Silvaire1
Fortunaly you don't have to deal with the European system that is big on paperwork but I do have to ask if you follow the aircraft manufacturers recomendations to the letter?
EASA consider these recomendations as mandatory and give the maintenance company no option but to do unnessesary work in the face of common sense.
You simply can't say "my annuals only cost £120" as it is meaningless in this case, we too have customers who have the time and ability to work on their aircraft and so reduce their bills. I think that you need to price your work at £ 42/hour and then see just what an annual check is worth.
Returning to the thread I have seen increasing evidence that the CAA is getting more agressive on rule enforcment and are actively looking for those companys that are not doing all the work required.