what measures you are defining Airport City as the largest construction project in the UK
Well it clearly isn't the size of Crossrail for instance or, I would have thought LHR T2. Others too I would guess.
Just marketing hype probably.
I terms of capital value, I'm not even convinced if it's the biggest construction project in Manchester at the moment - there's Carrington Power Station at around £500m for instance. Airport City won't all be built at once but in phases - so a series of smaller projects.