So we went for a wander instead and found some lovely things to look at instead.
First stop was Trafalgar Square where 8 industrial robots from Audi's Ingolstadt production line formed the Outrace installation by Clemens Weisshaar and Reed Kram. You can direct the path of light produced by each robotic tentacle at http://www.outrace.org
While walking through Covent Garden - we had to fit in a visit to Muji and The Tea House on Neal Street - we came across a newly opened frozen yogurt shop called Snog. I can thoroughly recommend it and the changing coloured lights filling their ceiling look great and could even add to my A2 student Lex's sketchbook as her project is based on the lightbulb.
For me no visit to London is complete without a walk over The Golden Jubilee Bridge, especially if it's at night time. This has to be one of the greatest cities when it looks like this.