interesting, I've worked on a few Sir Robert McAlpine jobs - Crystal Palace swimming Pool refurb and some stossy private members club in Mayfair - might have to put in a call see if i can get on there if they get it
MJL - an Mechanical & Engineering firm get a lot of the McAlpine contracts, think they also have a box at White Hart Lane, i did hear a while a go they were going to be tendering for a section of the works
looking at their website they have designed several stadiums - Stamford Bridge, City of Manchester and several abroad - don't think they are on the same scale as this though and no idea how much of a role they played in the selection process as to who gets the contract - wouldnt on a job like this the client (Spurs) leave it up to the architects to decide ?