An interesting site
Here
With Manaul tuning I have
Ch 10C - Arqiva T&D - Test transmissions
Ch 11B - Drg London
Ch 11C - Now Cambridge
Ch 11D - Digital 1 Network
Ch 12A - Switch London
Ch 12B - BBC National
Ch 12C - CE London
Ch 12D - Now Peterborough
Looking on the website above it looks like those countries that use Band 3 in Western Europe are using the same channels as the UK.
But France and Germany use Band L more than Band III. Band L is around 1400MHz and a lot of the receivers don't have Band L which if you only going to use it in the UK isn't a problem.