Guys,
TomTom has appeared on the App store.
It's £59.99 for the application without the cradle. Apparently it doesn't support the live services such as traffic etc either. My guess is O2 blocked that as it could be classed as streaming data I guess.
The cradle is an extra that you need to buy as well, one website rumors it to be £114 on top of the cost of the program.
Buy TomTom for iPhone Mount Reviews
David.