People are still putting their lives in danger by swimming in the region’s reservoirs, Yorkshire Water has warned.

Wardens at numerous reservoirs across the region asked people to get out of the water last weekend, and the water company now wants to highlight the dangers of taking a dip during the hot weather.

“What began as a day out in the sunshine can turn to tragedy within minutes if you decide to take a dip,” said Yorkshire Water’s recreation and catchment manager, Geoff Lomas.

“It really doesn’t matter how well you can swim as it's the cold which can kill you. Most people won't realise that, as soon as your body feels the shock of cold water, its natural defences kick in. The first sign of trouble is hyperventilation and cramp.

“The victim will be unable to remain afloat and will sink below the surface and, if help doesn't arrive within seconds, they will drown.”