Tributes have been paid to a "charismatic and generous-hearted" young man who had "endless good humour".

More than a thousand pounds has been raised for a charity that prevents suicide in young people, following the death of Tom Treherne, 23.

The former pupil of King's College School in Wimbledon died in Oxford last weekend.

In a poignant tribute by former tutor Mark Allen, the former pupil has been described as a "charismatic and generous-hearted boy". Mr Allen said all that knew Tom would remember his "irrepressible energy, endless good humour and brilliant mind."

Family and friends are raising money for PAPYRUS, a national charity for the prevention of young suicide.

Tom was famed for setting up the Dr Who society at the school, as well as his contributions in stand-up comedy events, and debates. A quote from the BBC's long-running science-fiction programme is even featured on the JustGiving page. It says, "In the words of Toms favourite Timelord Dr Who: 'Pain and loss, they define us as much as happiness or love'".

The Wimbledon student played trumpet in the school's big band and orchestra, and was a "brilliant scientist", with his old school books still used as a model for younger pupils.

So far, a JustGiving page set up in memory of Tom has raised £1,580.

His old school tutor said he had a "rare gift of being able to support those who required help wherever such need arose." He concluded by saying, "he was a lovely human being."

Andrew Halls, headmaster of King's College School, said: "My colleagues and I send our deepest commiseration to Tom’s family, and to all those who knew Tom, including the boys and girls who were among his many friends at King’s and those younger pupils who will have benefited from his advice and enthusiasm."

Donations to PAPYRUS can be made using the following link: