For ten years Harry Potter has dominated his work and his social life – even more so because of a good behaviour clause in his film contract.

Now filming on the final instalment of the hit franchise is over, it seems Daniel Radcliffe is making the most of his new-found freedom.

The actor, who is worth ￡42million, celebrated his 21st birthday in style on holiday with two friends in St Petersburg, and looked increasingly worse for wear as the night went on.