Colin Wood: Escaping from it all
The latter-day Scrooge paid £300 to spend the entirety of the festive period underground in Kelvedon Hatch Nuclear Bunker.
Mr Wood, 30, settled into the former Cold War shelter near Brentwood, Essex, for two weeks on Thursday.
He told BBC News Online: "Do you ever get that feeling on Boxing Day thinking 'that was a bit of a let down' - that is what I am trying to avoid.
"What I don't like about Christmas is the running around, the buying presents, the family bickering and the terrible films.
"I think there are a lot of people out there with families and children who would like to come here - but they can't because I'm here."
Mr Wood, a call-centre assistant from Dulwich, London, was one of 50 people who bid at internet auction site bid-up.tv for the privilege.
His friend has given him a copy of Dickens's A Christmas Carol to read.
Dark and quiet
He added: "My mum and dad where absolutely fine. They know Christmas is not my favourite time.
"They just said 'whatever makes you happy' and this is it.
"I have got plenty of books, I'm going to play chess against myself and I've got a writing pad so I might write my own novel."
But bunker owner Michael Parrish, who has spent the odd night in the bunker, says the two week spell could be more like a prison sentence.
"If you are on your own and 30 metres underground it is pretty dark and pretty quiet.
"It does play on your mind but it is nice and warm, permanently 60 degrees, and not uncomfortable."
Government loo roll
Mr Wood will emerge on 2 January, having feasted on cold baked beans, cold spam and a glass of water for his Christmas dinner.
His Yuletide home is 30 metres underground and protected against atomic and biological attack by 10ft-thick reinforced concrete walls, and blast doors made from tank metal.
It was designed for up to 600 military and civilian personnel to administer the country during and after a major nuclear strike.
It even had a bedroom for the prime minister, although Mr Wood will have no shower and government-issue toilet roll which says "use both sides".
Kelvedon Hatch is open most of the year for tourists and Mr Wood will be offered some company during the festive period with staff popping in and out during the days.