im sorry if my comments might have offended or even been misunderstood. i will try to clarify.
there are far too many mobile techs offering services who really shouldnt be touching a caravan. there are a few who come into our business buying parts and after a very brief conversation it is obvious that they really dont have a clue what they are doing. even my apprentice and receptionist know more than one joker. infact one even want us to tell him how to complete the repairs he has been asked to complete by a customer. last year when we hosted the CITO PIR testing we had 8 mobile techs attending. out of the 8 only 1 had any sort of idea what he was doing and would have employed him. as for the others, i would have been happier with them washing caravans. this is very frightening for me because potentially these happy go lucky, cheeky chappys are messing around with gas, electric and brakes!!!
obviously this does not apply to all mobiles or independents. this is why i still say, anyone being employed to work on a caravan MUST be a member of the AWS. this way the person you are paying to make sure your caravan is safe and legal, will have a very good minimum qualification level with City & Guilds, ACOPs, CITO electrical competency etc.