Answers abit thin on the ground as most are away this weekend
Your first port of call, should be the people you bought from ie the dealer,
if they cant help the RAC or AA may offer something, last resort any motor trader can sell you a mechanical breakdown insurance policy, however this will not cover the motor home aspects, for what its worth I personaly dont feel they are good value for money, and Im in the trade
I am now getting a full service done from a good source(Camper UK) at a saving of £300 and if anything turns up I have time to get something done about it. I will consider not extended my warranty. Thanks.