Christian reports back to listeners on the latest leg of his worldwide exploration of high speed rail networks, this time with the extraordinary progress made in the People's Republic of China [1:22].  Mark Walker and Christian discuss the impact of and explanations for the recent total shutdown of London's Heathrow Airport as a result of a fire in the electricity distribution network [22:41].  In his final thought from the departure lounge, Christian looks forward to the possibility of competition on rail services between the UK and continental Europe [29:52].

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