Staying near Bletchley Park(Code breakers)

Have just come back from a few days away ,we stayed at a camping and Motor-caravan certified site at Grove Lock Marina.
Site was about 30 mins. drive to Bletchley Park ,parking is fine for M/H providing you do not have a dog as they are not allowed on site so parking is then in the railway station unless you can talk nicely to the duty manager and he allows you to park just outside,(we did)
The site is mostly grass ,it is alongside the grand union canal ,so a pub of the same name is close ,always a bonus :drinksallroundwe walked along the tow-path to Leighton Buzzard about 30mins.Market on Tuesday and Saturday not very good in my view.
Regards, Gary