Hi
We store with the Camping and Caravanning Club. During the winter, we store at Blackmore, at the foot of the Malverns and we pay £220. It runs from the end of October to the end of March. The nice thing about storing at Blackmore is its an all year site so they will pull out for you and put it on your favorite pitch and we go up after work on a Friday night, all we need to do it plug it in and get some water. We are having a glass of wine in the best holiday home ever, within half an hour. When we leave, we unplug it, put the water away, wind up the corner steadies and off we go, they put it away for us. Life does not get any easier. It also means we get so much more use out of the van as we use it right through the winter and stay there for New Year. The towing out and in again is £6.50. In the summer, we store at Walton on Thames as it is close to home so we can hook up easily and set off. Summer storage is £210. So for £330 a year, you get all year storage and its safe and secure. As far as I'm concerned, this is great value for money. We currently have a S/A but are just upgrading to a T/A but the costs for storage do not change.
Hope this helps.