A 38-year-old man who caused damage to the water supply unit of magician David Blaine's suspended box has been fined £1,000.
Blaine is complaining of feeling "dizzy"
Stephen Field admitted climbing a tower near Tower Bridge, in central London, which supplied water to Blaine.
Field, from Surrey, had said he had wanted to get a better view of the magician.
But he threw a five-gallon plastic water container from the tower, ripping off the feeder pipe and breaking two taps in the process.
He pleaded guilty to causing criminal damage
and a further charge of using threatening behaviour at Tower Bridge Magistrates' Court.
Claudette Hamilton, prosecuting, told the court how Field had decided to take a look at Blaine after working until 3am on 16 September.
Miss Hamilton said: "He was seen to be rocking the top platform and then
tugging at pipes and ropes which connect the supporting tower to the box."
Security staff were alerted by the magician and attempts were made to persuade Field to come down.
However, Field picked up a water container and threw it
to the ground.
Field then challenged security staff below, shouting: "I'll take you all on
if I come down. I'll take you all on."