Hi Ant,
I paint murals on Fredrix polyflax mural canvas(primed). It's a great surface for painting large. It comes in 96 inches or 126 in. (3.2 meters) wide and 7 yd (6.4 m) or 10 yd (9.14m) long. I had to look up the metric conversions. I hope they are right. It comes in a roll but I don't know about shipping overseas. I get it from Lake Arts.
http://www.lakearts.com/MURALCAN.htm...Mural%20Canvas
I have also ordered unprimed cotton duck that measured 120 inches x 6 yards. This comes folded and may be easier to ship. These are all sources in the USA so I don't know how much help this will be.
http://www.jerrysartarama.com/art-su...es/online/2983
There are several other US companies that carry the same products so if one won't ship maybe another one will. Let me know if I can be of any help.
Good luck,
Cynthia