Essex Coastguard warns people not to swim in freezing conditions
Coastguards in Essex have warned people to be sensible in the cold weather after a participant in a charity swim had to be treated for hypothermia.
Organisers of the Friends of Kenzie Cackett charity swim at Clacton-on-Sea pressed ahead with the event on Saturday despite freezing temperatures.
A man from Brentwood had to be treated after he ran into difficulties during the swim.
The RNLI gave him a hot shower and drinks to fight the effects.
A spokesman for the Coastguards said: "In temperatures as low as that, someone in the water would be incapacitated in less than 10 minutes and survival time is just twice that.
"It was a very well-intentioned thing to do but they should have taken advice and among other things had a safety boat there."
Kenzie Cackett is a three-year-old boy from Halstead who is suffering from cancer. He recently had surgery in the US to treat a brain tumour but unfortunately the cancer has spread to his spine.