Hi,
You may want to try a website from a fellow named Sanjiy Suri in India, his prices are very low, he custom makes the garments for you, and will ship them within a couple of months, he has WWII British battledress in Khaki color, not any Canadian green yet.
I have ordered mess kit, battle dress and parts of uniforms from him before and all have been in good quality and the service hasn't let me down yet.
His website is,
http://www.replicaters.com/
Cheers,
Rob