I love the Doctor Who books - always have done. But I can't see a game working at all - having a pretty much pacifist protagonist would pretty much kill any standard genre of game dead.
The only genre it would fit into is adventure - which is already on life support. So they're basically talking about a niche market game (uk pretty much exclusively) in a niche genre. Yup that'll attract a lot of funding and be of reasonable quality I'm sure. Capcom's Zack and Wiki was really fun on the wii - but something tells me Super Ultra Mario Gangbang Brawl Now With Extra Cuteness sold more.
Top Gear also won't work - unless it's an Iphone app ala Top Trumps which people could play against each other on the train. Guess they could give the starter pack away free to launch it to a wide audience then charge for addon cards.