No son of mine

Richard Morrison, of the Times, boasts:
My mother’s family lived around the coalfields of South Yorkshire.

Good for her. Sadly, young Richard later writes:
Fancy regeneration schemes – all mouth and no trousers, as my granny would have said – have delivered neither jobs nor prospects nor pride.

Presumably this granny must have been from the other, south-of-England, side of the family tree. In Yorkshire, it's 'all mouth and trousers', lad.