As your from staffordshire...Roaches is great for sunset.
Ladybower and the reservoirs there are also good, sunset at Ladybower can be fantastic.
Mam Tor for sunrise.
Mid-day things, go to padley gorge for some long exposure work with water.
They're your main areas, but plenty of other stuff. Depends how early your prepared to get up and late to stay out and how much walking you wish to do.
Take a look at my Flickr/Website and click Peak District, its my stomping ground so hopefully may give you some ideas.
Sorry, cant help with location, but had a quick look at you pics on you web site James, and you have some crackers.
"granty" are there any pull ins where you can kip the night in camper van ?
Mam Tor area
I think Dovestones reservoir is sort of Peak District. If so, I think it's a fantastic place to go.
Definitely in the Peak District, its west facing so good for sunset. I've not been yet but I have seen some fantastic pictures. Trouble for me is, its about 65 miles away so quite a trek for it not to materialise!