In reply to G4OIG:
Sorry - my misunderstanding. I assume you realise you can download all this high-definition mapping (albeit without contours) from the OS site for free. Just tick boxes to request what you want, give them an e-mail address and you’ll receive a download key immediately. If you go for highest resolution, you download tiles equivalent to SO, SP etc. Be warned, they’re about 800 MByes each. I think you can also request a DVD.
Now, maybe some clever person could combine this data with the SMC contours data that I use with Garmin’s Mapsource to provide what we want.
I’m not that clever person.