Kristian Digby’s relatives have told of their shock as police investigated whether he died when a solo sex game went tragically wrong.

A post-mortem examination is expected to find the BBC daytime host suffocated while deliberately starving himself of oxygen to heighten sexual arousal.

Officers said they were officially treating the circumstances of his death as “unexplained”.

In a statement his relatives said: “The family are saddened and in a state of shock at the loss of Kristian who they loved very much.”

Digby was pronounced dead at his home in Richford Road, Newham, east London, after an ambulance crew was called shortly before 8am on Monday.

Colleagues and friends have reacted with shock, describing the To Buy Or Not To Buy host as a “lovely guy” who brought a “real sense of energy and warmth to all the shows he presented”.

Liam Keelan, Controller of BBC Daytime, said the 32-year-old would be “very much missed”.

He said: “Kristian was without doubt one of the most popular and talented presenters on BBC Daytime.

“He cared passionately about the programmes he presented and viewers loved the charm and warmth he brought to every one of his shows.

“He will be very much missed by all those who knew him. Our thoughts are with his family at this very sad time.”

The property expert worked on a string of shows including Double Agents, Living In The Sun, House Swap and Buy It, Sell It, Bank It.