Matt Pavitt, the Coastguard sector manager for North Cornwall, said the injured four were "badly shaken up".

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Matt Pavitt, HM Coastguard inspector, said a number of steps were also lost and a diversion would be put in place.

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Matt Pavitt, from north Cornwall MCA, said there had been a rise in the number of people tombstoning across the UK in the past two years.

BBC: Tombstoning warning sign