No - it is an amazing school. One of the best in Europe. However, it is not easy to transfer back post qualification, even now that Prague is in the EU.
If you want to practice in Prague, then qualify there. If you want to practice in the UK, then qualify here... There is no such thing as a guarenteed job in medicine anymore... There's also the stigma attached to qualifying at an Eastern European medical school (all the crap about 'anyone being able to do medicine if you have enough money'; 'what's wrong, couldn't you get in over here' etc... All very prevalent amongst consultants...