I first used Chippenham trucks stop (Silvey Trucks top,if I remember correctly)in about 1994, for a few years, typical trucks top then. Decent food, toilets, and able to park when you arrived. Seen the change start, when the car parking became more prominent, then the farm shop arrived, and then the cafe went “upmarket” (i.e. expensive). Final nail in the coffin, was the renting out of half the parking to Jenkinson, and the unavailability of parking after about 1500 hrs.
You can’t even pull in for a meal, because of the lack of space…