Found a great supplier in Manchester

[Graham Orm]

They ship around the country and have a lot of stuff in stock. I've never used them but stumbled on them when searching for Birch ply in the North West. Mainly sheet goods.
Have a look at the 'Diamond quality ply'. Never heard of it before.
http://noyekplywood.co.uk/

 

[Phil Pascoe]

If there's only one product that meets those standards, it's not really surprising you've not heard of it.

 

[Tim_H]

Thank you for that, I will bookmark them.

Tim