It's not that bad. As long as you don't succumb to the urge to join the rest of the rabble and run and push in a blind panic to be the first to the platform or to be the last to squeeze onto the already overcrowded tube carriage. I have a relatively pleasant journey. I get a seat on the bus, train and tube and get to have a coffee at DH when I wait for the train. The journey time is about the same, sometimes even quicker. The only down side is it costs more.