I've just seen this and want to give a heads-up to all those that might be thinking of going.

http://buff.ly/2j5lRY6

Not been to an excel show for ages and doesn't look like I will be soon either

Doesn't matter much. Royal Victoria and Prince Regent stations are just up the road.

Last time I went to the ExCeL, I walked to those to avoid the crowds at Custom House anyway.