Hi known what you mean...I,m Airdrie and travel to Cornwall every year,,,I always stop off at Tewkesbury,if not booked or flooded,1 mile from m5,,,access no problem and a nice town on your doorstep to wander around aftedr a 6 hour drive,,,only problem is it is the wrong side of Bristol,ideally once your past vthere your home and dry...if that sound good have a look at caravan club site at Bunham On Sea,,,about 3 miles from m5...nice site 2 hours further down the m5 and much closer to cornwall.....to be honest last year I booked burnham on troute down and tewkesbury on retune which was great,,,have a nice holiday.....hope my ramblings of some help