I have a suggestion

I'm too old to go round hunting for open car parks, getting moved on by the pigs etc, I'll also get rapidly bored just staring @ B&Q, Tescos or where ever we end up

Lets go here!

http://www.compass-inn.co.uk/

It's RIGHT next to junction 18 of the M4 on the A46

Big car park, plenty of room inside and BEER

Sounds much better IMO

Relaxing in the comfy atmosphere of a country pub