Our Entertainment Correspondent Lucrezia Millarini has sent these snaps from the O2 Arena.
She's there watching the Cirque Due Soleil rehearse their new show.
More top news
Tencho Hristov ignored warnings and got trapped between barriers at Roydon in Essex.
The 6km bike track will include 130m of the South Circular near Kew Bridge.
The unfortunate officer was taken to a central London hospital for treatment and his condition is not life-threatening.