Dog friendly campsites for motorhomes

Hi all,
I'm a long term dog worshipper and southerners me and Milo (my beloved male collie) who doesn't deserve brackets as he's highly significant, are off in a motorhome in May heading up through Lincs, Yorks, Northumberland to the highlands and back down via the lakes and Debyshire. Anyone know any really nice dog-friendly campsites??
Thx

If you go to www. dog and then people .co.uk (obviously without the "and then" in ) there should be something there.