You quoting best case. What are "normal traffic conditions" on the M25 or through London exactly?
A2/ M2/Thanet Way is a great drive, hardly ever gets snarled up (I do it most days) and when you get to Manston you can park within 200 yards of the terminal building and not have to pay the extortionate amounts of money other airports charge for you to park your car. And who knows, before the end of the year we may even have a proper airline to fly with as well.
Re the KCC story, there's no mention of Lydd in their piece, do they know something?