Comment by Paul_S

I had been doing a similar trip (100km from London) very often in the past and always took the train, over the years the journey time has gone down to a little over 5 hours. I took a flight once two years ago and when you add all the waiting, security, getting to and from the airport it works out almost exactly the same, except you're more tired and can't take as many suitcases. Now, imagine we had fast trains in the uk.