there's a storage place in Wombourne no idea of costs or its name but it looks secure , there's CCTV , coded entry , electric gates etc.
What area of Wolvo in particular? as theres a StorageKing (I think thats what its called) deport near Darlaston that looks like it has caravans and Motorhomes as well.
There is a COSSOA storage site near Hinstock, just north of Wolverhampton,we store our van there as do some neighbours. Hinstock is off the A41 Wolverhampton to Whichurch road. From the centre of wolverhampton to Market Drayton it takes roughly 45 mins, hubby works in Wolverhampton. Hinstock isn't as far so possibly about 40 minutes drive away from Wolverhampton.