I am looking to setup a photography print business. Does anyone know of any suppliers that can provide frames for 18 x 12" photos? Ideally it would be good if they were UK based.
Try http://www.readymadepictureframe.com/ - wide variety of frames in various colours and styles
I use Picture Frames Direct
Very good in price, mostly glass and they have a huge range, and when they deliver the frames are wrapped in heaps of bubble wrap so very well protected while in transit.
If you order over the phone, which is what I do, you will get sound advice as well as being able to ask lots of questions, change the colour and apeture of the mount or even order double mounts.
If you are looking for Quality and aren't worried about price then Kenro are another option, however they supply only to professional photography shops and studios, and supply in bulk, when I first ordered I needed to order a min of 5 of the same frames.