Air France Cityjet is now doing LCY - Madrid as well - anyone know if they use 3x3 or not?

A quick look at Expedia also shows some very attractive prices on Swiss from LCY (2-3 seating as mentioned above), changing in Zurich. Laughably, this would still be quicker and a whole lot less stressful (if you're starting in the Wharf) than going BA from LGW or LHR ....

Swiss will also give you a £4 food voucher to spend in the terminal if you are M&M Gold, whatever class you are flying.