I had a quick look at the CD-ROM the other day and it is not bad for the CAA. Certainly explains it reasonably well. At first glance it seems pretty much a change of names with a more explicit definition of each service. The new one on the block is the procedural service but that only applies to IFR traffic.
I'm not looking forward to having to say "Modified Deconfliction Service, SSR only" at regular intervals though. Modified RAS is so much easier to say. (Don't worry D-P this isn't thread creep, this is thread leap!)