[Scharnhorst1943]

Is there a way to get Canon UK's beta Channel map to DGC?

You have to do everything I have shown in this tutorial for that map.

You need to make or edit these files:
-allcampaigns.dcg
-grandcampaign.dcg
-offmap.dcg
-maps.dcg
-MasterMap.mis
-MapName.rds
-MapName.rls
-MapName.srd
-MapName.prd

I plan on making all new maps into DCG. I am working on it as we speak, but it is kind of a daunting project. Can't really be done overnight. I plan on doing a complete remake of all the stock DCG campaigns and adding all the new maps to them. If you want to go ahead and work on adding it yourself by all means.

But if you don't mind waiting a while, I will have all the new maps in a big download for DCG.

Up to you.