Where to find tickets for IMAX 16/01 for Avatar.....

[BringbacktheP&P]

Hi all

I'm trying to find tickets for the afternoon showing for Avatar at the Southbank IMAX on the 16/01 which, unfortunaely, sold out ages ago.

I've tried Craig's list and Gumtree but wihout any success. Does anyone have any other suggestions to where to look (or tickets they would like to sell!)?

Thanks