Good parking near Bath. Off road lay by etc?

Set off Sunday at 17.30 thought I’d miss all the weekend away traffic, how wrong I was! M6 from Thelwall all the way down to J15. Then all the roadworks from Stafford, down M5 bridge works. Anyway only got to Michaelwood services & that was 22.00 hrs setting off at 7.15 on Monday so had to stop somewhere. All went well till around 5am when I got a fridge unit on full power for a 45mins couldn’t get off after that. Got same drop in morning got to Chippenham truckstop this time no delays from Lancs to here 4.28hrs, good going!!!