From that list It does suggest it's an XUD9 Turbo head gasket.
The BG Automotive site
http://bgautomotive.co.uk bears this out.
Do a gasket search and you'll get the BG6590 H, I and J listed for the XUD9BTF engine.
In fact, BG gaskets list the CH6590D as being for the XUD9TE engine fitted to the Pug 405 TD.
I wonder what the different letters mean

Thickness?
Anyway, for all intents and purposes it's an XUD9 Turbo head gasket John!