OK I'll suggest a route. From Morrisons head south and hop on the A38 then head down the A371 that 'should' take us towards Cheddar, signed Wells if I recall .
Stop at the caves to stretch the legs n have a look around. There's a pub

on the A371 near the caves that we could get some food in although it might be busy. Pop into Wooky hole after that.
We could bimble on through Wells to Shepton Malletand either catch the A37 back in towards Brizzle or carry on on the A361 past Frome then up the A36 twards Bath to pick up the A46 then A420 back to Brizzle.
Just thought off the top of me head
Anyone want to volunteer to lead this one?
Failing that, we could play Scrabble or do something dull like mow the lawn (needs doing I know

)