The first passenger train from England to France carried Queen Elizabeth II to Calais on 6 May 1994. Trains carrying less exalted passengers would not set off until November of that year, and the more arresting image of English and French engineers shaking hands beneath the sea had come four years earlier. Officially, though, this week the Channel tunnel turns 30. It is almost too old to be going to nightclubs, and is starting to worry about its back.
Its existence remains, by
