Over the weekend we'll be driving up the M6 between Liverpool and Manchester:
We'd like to stop for a few hours around lunch to break the journey but I don't know the area at all. Can anyone recommend somewhere nice for lunch within ~10 miles of the motorway. Something outdoors, without high ticket prices... any nice National Trust gardens?

We'd like to stop for a few hours around lunch to break the journey but I don't know the area at all. Can anyone recommend somewhere nice for lunch within ~10 miles of the motorway. Something outdoors, without high ticket prices... any nice National Trust gardens?