The family of a toddler who died following a swimming pool accident have helped create a film on the subject in a bid to prevent further tragedies.

Jason and Lorna Else’s two-year-old son Oliver died after being found drowning in a swimming pool at a party in July 2010.

Staff at Addenbrooke’s Hospital in Cambridge fought to save Oliver, but he was pronounced dead three days later.

Since then Mr and Mrs Else – who live in Hitchin with their three surviving sons, Tomas, 10, Samuel, 5, and two-year-old Alexander – have been raising awareness of the dangers of young children in water.

Short film The Danger Age does just that, highlighting to parents potential threats posed by baths, ponds and swimming pools.

The Else family were consulted in the making of the film, shot in memory of Oliver and three-year-old Conwy Martyn, who also died in a drowning accident.

Mrs Else said: “We will never forget our beautiful, beloved Oliver. If our involvement with The Danger Age prevents the death of even one child, then Oliver’s short life will have had an enormous impact.

“Protecting children from drowning – the biggest cause of accidental death worldwide in those aged one to four – is critical, particularly at this time of year. The film we advised on hopes to prevent future tragedy.”

Conway’s father Simon Martyn added: “Conwy, our first child, was a glorious and happy little chap. He lit up the place wherever he went. One or two of our friends said Conwy was part of the reason they decided to start a family.

“This short film is about preventing future tragedies. We want as many people as possible to know about the dangers of water for young children.”

To view a trailer for the film visit www.youtube.com and search ‘The Danger Age’.

• A fundraising page has also been set up to help promote the issue and has so far raised more than £26,000. To make a donation, which will be matched by children’s charity the Angus Lawson Memorial Trust, visit www.justgiving.com/TheDangerAge.