I have looked at Wicks etc. Preferably in the South East.

a window is the bit you look through the frame is the bit that holds the bit you look through.
dont go large multiple pick up a yellow pages or thomson or use a pooter to find a local supllier. let them come and do the measuring then its not your fault if the wrong size 5mm too small no problem 5 mm too big time consuming 50mm too small oh dear 50mm too big oh dear oh dear.

http://www.deerehart.com/, give Peter a call and see what he can offer you.

most of the builders merchants are supplied by

http://www.jeld-wen.co.uk/windows

so check out the sizes and prices here

Thanks guys, is deere hart in Serbia?

01932 comes up as Surrey, but I know what you mean, the site’s been under construction for a while… 🙂

Not sure what your budget is but you could try this lot http://www.rationel.co.uk/ of if you fancy something a little different you could try http://www.velfac.co.uk/. Not the cheapest by good quality.