I know several people who own or have owned mobile homes in the Severn Valley.
The people I know, live and work in the West Midland conurbation and treat their mobile homes as a countryside bolt hole away from the built-up areas that they live in.
Quite often fellow family members will own mobile homes on the same site. Often travel to the Severn Valley from home can take less than an hour and people sometimes arrive on Friday evening and then go straight to work on Monday morning.
There's some wonderful cycling and walking to be done in Shropshire and Hereford/Worcester.