Crystal Palace light show tonight

The Huffington Post reports that Crystal Palace tower will be lit up in a ceremony to mark the end of analogue transmissions from the historic structure:

The full song and dance will take place at 9:15pm on 18 April, once the signal has been switched off, when Sir David Attenborough and Brian Cox will switch on the illuminations that will shower the 219-metre tall tower in light. 

It should be pretty spectacular from Hilly Fields, Telegraph Hill Blythe Hill so worth craning your necks for. You can see what it looked like in rehearsals last night in this video from Arqiva, the telecoms company that owns the tower. Skip to the end.

Thanks to Michael on the South East London forum for this one.