Hello,
Not solely dedicated to film but, save your pennies and buy Ag magazine.
I thought I'd gone potty when I first spent twelve quid on a magazine, but it's fab.
The editor (Chris Dickie) is hilarious, the work is great and not an advert in sight! Bliss.
The only downside is that you end up not putting it down once it drops through the door.
They often have it at large Waterstones.
Have a look at their website
http://www.picture-box.com/Focus, B&W, Silvershots and Portfolio are quite good too, though a bit adverty and Focus and B&W are a bit Americany
Hope this helps,
Chops