As you entered the grounds of Shap Abbey on the C2C there was a container of snack and drinks with an honesty box run by the farmer, Don't know if it is still there.
It was last year, but it was only a couple of miles to go before Shap so I didn't bother. There is also one just under the bridge in the woodland after Burnbanks, not long after the dam on Haweswater.
Nope Pleb, I meant the one when you descend Whernside towards Ingleborough