British public transport isn't too bad at all, but quite expensive by our standards. In general it is total mess of public and private ownership and innumberale authorities that control the many parts of the system, along with those who want to make a profit from the system. That is works at all is amazing to me. At times it goes wrong and again with generalisation, the private operating part of the rail system dominates when things fail.
It seems odd to me that the worst of the British rail system seems to be in the better outer extended areas of south east and south west of London. Nevertheless this bloke was only going to Dartford, a bit south east of London.
What a horrific experience. http://buzzsteam.com/2018/03/04/southeastern-commuter-train-stuck-at-lewisham/