Derren Brown to predict Wednesdays Lotto result.

[Frank]

Given that he's only got 5 minutes to do it, he may have done something beforehand as Val says and then say he's choosen the numbers -without revealing them until after the draw, perhaps putting them in an envelope. Then he'll switch the numbers he had 'chosen' for the real result during the show.

Or use a direct transmission (non digital TV broadcast ) to get the numbers 2 seconds before digital viewers get them with satellite/ transmission delay built in.