I like Holmfirth Festival of Folk.

Reasons?

Great sessions in a lot of the pubs with loads of friendly people.

They don't make you pay for anything you don't want to pay for.

You can just pay for the camping which is a large area and not particularly expensive. It is also a stone's throw from the town where all the pubs are, very convenient.

Loads of dance teams, 25 at the last count. Makes for an especially lively atmosphere.

A good fish and chip shop.