The first two London dates (Friday 12 April and Thursday 25 April) of the CIPD Law on Tour are sold out. Even if you ask very nicely the CIPD still won't let you stand at the back... so if you want to be sure of a seat book the third and final London date of Wednesday 1 May 2013 instead.
All the dates and locations (the Tour as the name suggests covers all of Great Britain - not just London), plus a booking form can be found on the CIPD website .