The wife of a British millionaire architect has been found dead after falling asleep in a car in a friend's driveway following a heavy drinking session.

Early postmortem results showed Nicole Falkingham, 41, died of hypothermia and acute alcohol intoxication, reports the Daily Mail.

Her death comes after she told friends she was fighting a divorce battle against her estranged husband, Jonathan Falkingham, 50, the chief executive of multi-million dollar property firm, Urban Splash.

Mrs Falkingham had gone out on Thursday evening. She had been drinking in a wine bar with friends when she suddenly became "comatose", the Daily Mail reported.

Bar staff alerted the emergency services but the group left.

Mrs Falkingham was found dead in the back of a car the next morning after temperatures fell to -2C.

A staff member at the wine bar where Mrs Falkingham and four friends were drinking said that before he had a chance to call an ambulance Mrs Falkingham was taken away by friends.

A 48-year-old man and a 49-year-old woman from Aigburth have been arrested on suspicion of manslaughter.

They were both released pending further inquiries and the invenstigation is believed to centre on whether they failed in a duty of care to Mrs Falkingham in her drunken state.

A Merseyside Police spokesman said: “We are ­investigating the unexplained death of a woman following the discovery of a body in a car on Friday.

“Officers were called just after 10am and Nicole Falkingham, 41, from Allerton, was declared dead at the scene by ­paramedics.

"A postmortem has been carried out and full results are being held pending ­toxicology reports.”

Sky News UK reported that in a message to staff, Urban Splash chairman Tom Bloxham said: "I am very sad to say, as some of you have heard, that Nicole Falkingham tragically died on Friday.

"She was one of life's great characters and her loss so young is a tragedy. Our thoughts go out to Jonathan and Nicole's friends and family at this difficult time. It is so sad."

The Falkinghams were patrons of the arts.

Urban Splash was credited with promoting city-centre living in cities such as Liverpool, Manchester, Leeds and Bristol.

But it suffered multi-million-dollar losses during the global financial crisis.

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