The scenes being filmed in Cromer will be shot around the pier, Jetty Cliff and in front of the Hotel de Paris.

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Diving in from a pier or a jetty causes too sudden a change in temperature and is exactly the kind of stressor that could trigger a heart attack.

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Even an empty jetty, like the melancholy Steeplechase Pier at Coney Island in New York, draws Russian and Chinese fishermen eager to net the tiny fish that gleam in silver schools round the piles, for the little fry will catch bigger fish, and the bigger ones (mostly herring) are worth curing and eating.

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