JBGA - yes, none of the printed VFR charts run well on a moving map GPS unless you have a decent size screen - big enough to enable you to see the airspace class and vertical extent labels.
As regards Jepp, well one never knows who they pay money to. The Australian CAA sued Jepp for republishing their data, and the case was settled out of court. Jepp have not ceased publishing the data (had they done so this would have grounded airlines flying in and out of Australia) so one has to assume they cut a deal with the Australian CAA where they pay them some money.
I have no reason to think that Jepp pay money to the UK CAA but this is a much wider thing than just the UK and anybody doing aviation mapping has to do an international package. Jepp do have a lot of clout with the data providers - why do you think Eurocontrol's in-house airways route generation tool has still not been released openly to pilots, despite promises to do so 3 years ago.
Unfortunately everybody is treating charts as a profit centre, enabling electronic versions to be marketed in a very limited way by 3rd parties, and then they moan about CAS busts.