Deutsche Bahn actually runs train services in the UK (as do Dutch operator Abellio and French operator SNCF). Sadly, their arrival hasn't brought with it the cheap, reliable travel that we view enviously on the continent. Instead, we get the same expensive, poor-to-mediocre service as every other train operator.
http://www.theguardian.com/politics/2014/oct/12/rail-privati...