Went to the Popham Little Chef last night. Pretty much what I'd expected: Nothing earth-shattering, but pretty good food for the money. The menu is mostly your usual kind of stuff: fish & chips, spag bol, pie, etc. but all seemed pretty good quality. I was impressed that the breakfast (which now claims to all be decent-quality ingredients, according to the menu) still comes in under £7.
I picked the most interesting thing I could find on the menu - ox cheeks (cooked in red wine for 3 days, apparently), which I was very happy with indeed. Vicki had a steak and ale pie that was a bit more run-of-the-mill.
Very good kids menu, which stayed away from the usual processed cr*p. Staff were pretty friendly and did seem noticably more attentive than your usual service-station crew. Only recognised two of them, tho'
Overall: would happily stop there again, and probably make a bit of effort to schedule it in as a stop, mainly down to the top-notch kid-friendliness.