I wondered if in fact this was correct so I have contacted Bailey with this question:-
If I have my Bailey caravan serviced by a mobile AWS engineer is it necessary to then “register” with Bailey that the service has been carried out or is it just sufficient to retain the service sheet should a warranty claim be needed in the future.
The reply was:-
Thank you for taking the time to write to us.
I am pleased to clarify that it is indeed sufficient to retain the service sheet should a warranty claim be needed in the future.
Customer Service Co-ordinator
Bailey of Bristol
So there is no need to inform Bailey if you have a mobile service performed.