Nice one, Guest... I've now bookmarked that site.

Yes, train. Deffo. You'll die a slow and lingering death sitting through the traffic once you hit London's orbital pull otherwise - especially at that time of day. Just getting through the Dartford tunnel can take three lifetimes. And the M25 is so heavily used that it's always needing maintenance somewhere or other, so there are often roadworks to sweeten the mix.

I think even a train may possibly take you a bit longer than two hours tho, depending on how long you have to wait for one. But on the roads... fergeddit. Have a great journey -