I noticed this myself and looking at the XML file just to make sure it wasn't something funky with my importer, Sky News, Cartoon Network and 63 are indeed missing. There's info in my Sky box for these channels so I presume it's in the EIT although don't have a DVB-S card obviously (hence why I'm interested in your guide) so can't look myself.
While this is semi OT, I also noticed the EPG doesn't seem to have been updated since 13/03. Obviously as a free service I have no expectations it has to be continously updated or be available at all, I'm just wondering is this normal? Or are there been personal or whatever reasons why it hasn't been updated recently? Or have you been hit by a C&D order as well or decided to stop even without an order? (Most of the others stop providing anything at all so I'm not sure if that's the problem here.) Either way in such a case the issue of missing channels is understandably moot.
In any case, thanks for providing a great service!