Similar to the Reach post - apologies for the duplication but thought that they're such big games they deserved a post each.
I got it by using the following 2 codes at checkout - GAMES5OFF-1 (gives £5 off pre-order) as well as FTSL15-1 (gives 15% off). I've already used the FTSL code so again have used a different email account to get it to work.
I think Jack of All Trades are slightly cheaper, but have heard some real horror stories about them.
Sorry, not sure how to add an image, been a while!
Let's hope it's not as disappointing as Camping Nirvana Glitchfest 2, sorry Modern Warfare 2.