Hello Andrew. I have been thinking about doing this myself as I will loose my job soon. I was going to try the storage sites for some business and also try maybe a couple of car dealers and cater for both. I am a new caravanner, owned our van for about 5 weeks now. Having given it the clean of its life when we got it, we got a call yesterday (it is in storage not local at our parents at the moment) to say it was looking sorry for itself, black streaky and dirty. This is after 3 weeks of being left. This has now serioulsly put me in doubt wheter people will want to pay a good price for a valet if after 3 - 4 weeks it looks no better than when it was first done? I hope I am wrong but I think this is gonna be tougher than I thought...I hope you find some new business soon, as I say branch out, offer the service to cars, boats etc..anything to keep the money coming in. Good Luck