[youtube=http://www.youtube.com/watch?v=tGTwSNPqAqs&w=700] Sixty years ago, the BBC filmed a train journey from London to Brighton, squeezed into just four minutes. Thirty years ago, we did it again. Now we are bringing it up to date, to see how much has changed - and how much is still the same. Here's all three journeys side by side.
The soundtrack is Star Guitar, by The Chemical Brothers.