A Norfolk family spoke of their 'heartbreak' last night following the death of a beloved son and brother in unexplained circumstances in London.

The funeral of Greg Page, who was raised in Attleborough, is due to be held at the weekend after his sudden death at a sauna in south London.

However, his family in Norfolk are no nearer to finding out the cause of the 41-year-old's death at the Pleasuredome sauna, in Waterloo, after an ambulance was called just after 8am on Saturday, October 27.

Detectives launched an investigation after Mr Page died at the scene and a second man, John Scott, 46, was found collapsed.

He died in hospital two days later. A third man, aged 34, was treated in hospital and discharged on October 29.

Metropolitan Police officers are currently treating the deaths as 'unexplained' and an inquest has opened at Southwark Coroner's Court.

A post-mortem examination failed to establish a cause of death and detectives are awaiting the results of toxicology tests.

Tributes have been paid to Mr Page, who was the head of PR for the pharmaceutical company Roche and was an avid Arsenal FC supporter and season ticket holder. He went to school at Attleborough High School and Wymondham College in the 1980s and moved to London after graduating from the University of Sunderland in 1992.

In a statement, his family said they were 'heartbroken' by the news of his death.

'Greg was a much loved son, brother, uncle and friend. He was a very vibrant, brilliant and popular man. He will be missed very much.'

'He did a lot of good work and worked his way up to a senior communications job, where he was able to make a difference to many peoples' lives.'

His funeral will be held at 10am on Saturday at St Mary's Church, Rotherhithe, London, near to his home in Bermondsey, and his family have asked mourners to wear the colours of his beloved football team - red and white.

A close friend, who met Mr Page in 2001 through work, added: 'It was a terrible shock and he was very respected and a well regarded figure in his career and communications work. He was a very popular guy.'

'The last thing he wanted was anyone moping and he would have wanted people to celebrate his life rather than mourn. He was very close to his family and visited regularly.'

Colleagues and friends from the world of PR have also paid tribute to Mr Page who joined Roche in 2005 and helped lead the promotion around breast cancer drug Herceptin.

Susie Hackett, director of communications at Roche, said: 'Greg was totally passionate about what he did and his enthusiasm and belief were contagious. He brought with him a sense of humour, he was inspiring and he made life fun. Through his clever and creative use of comms, he made a difference to cancer patients, spearheading programmes around access to medicines.'

Mr Page was also a member of the executive committee of the Healthcare Communications Association, for which he also handled communications.

A spokesman for the Metropolitan Police yesterday said that drug use might be involved.

'This is a line of inquiry and we are awaiting further toxicology reports.'

'Police are appealing for a man seen entering the venue with Gregory Page to come forward as soon as possible. He is described as a white man, aged 25-35, approximately 6ft tall and of slim build with brown hair and a goatee beard.'

Anyone with information is asked to call Lambeth CID on 0208 721 3597 or Crimestoppers on 0800 555 111.

His family have asked for people to make donations in his memory to the Hepatitis C Trust, Pallister-Killian Syndrome (PKS) Unique and the Terrence Higgins Trust Hardship Fund and can be made to F. A. Albin and Sons at 52 Culling Road, London, SE16 2TN.