Stopover places - Dorset/Devon/Somerset

[ajs]

Hi, we will be travelling from Lancashire to Lyme Regis next Saturday night, through the night, and are looking for somewhere to stopover in the van (with two children and a dog) to get our head down for couple of hours. Ideally somewhere within striking distance of Lyme Regis the next morning, nearby somewhere we can get breakfast, toilets etc.

Many thanks!