Probably the vertical extents of airspace are clearer on the printed chart, if not a lot else (in the 496 context; a very good product indeed).
Also does the 496 finally depict Class A UK airways correctly? The Jepp GPS data usually shows them as just thin lines.
I believe that PFMS can run any chart you can provide as a graphic file and georeference it - same as Oziexplorer. If so, then one could run the CAA charts under PFMS. To get them into a common-format graphic file (TIFF etc), you either have to get them scanned (by a bureau with an A0 scanner which doesn't ask too many questions about copyright - this is usually v. expensive) or find a way to print to a graphic file from within Memory Map (which is possible, but I won't describe it in an open forum).
The CAA isn't doing pilots any favours with its policy.