boeing_eng
Someone has posted a link on the EasyJet thread to EasyJet's PLC page outlining the details of their planned aircraft order which has today been announced. Perhaps you should check it out...
Important to their strategy is that they continue to grow in their current markets in which CEO Ms McCall says is a fairly "no risk strategy". London will undoubtedly be part of that expansion.
She also says that there's 86 million seats available in EasyJet's top 20 airports available for them to use. Can't see Gatwick having too many of those, but the other London airports (predominantly Stansted due to its available capacity and new deal with MAG along with opportunities at Luton and Southend) will undoubtedly see some growth in the coming years in light of this announcement today.
Also, the first phase of new aircraft (existing generation of A320's) is expected to be delivered between 2015 and 2017. Mmm... interesting timing in relation to the Stansted deal last week!
We'll see, if you expect to find EasyJet's London market at the same size in 2018 as it is today, I think you'll be in for a bit of a surprise!