In a sensational rant Lord Tebbit bizarrely said that Tory plans for gay marriage could allow him to marry his own son and allow a lesbian queen on the throne.
In a scathing warning to the Government, the former Cabinet minister said the Prime Minister had “f****d things up” by pressing ahead with same-sex marriage legislation despite growing resistance from his own party.
His criticism comes as Mr Cameron was dealt another blow yesterday when he was forced to do a deal with Labour to keep his gay marriage legislation on track.
Lord Tebbit told the Big Issue magazine: “The Government discussed it for 20 minutes on the morning of its announcement.
“They’d done no work on it beforehand. I said to a minister I know: ‘Have you thought this through? Because you’re doing the law of succession, too’.
Questioning whether the gay marriage laws could cause chaos when combined with changes to the rules of succession, Lord Tebbit said: “When we have a queen who is a lesbian and she marries another lady and then decides she would like to have a child and someone donates sperm and she gives birth to a child, is that child heir to the throne?
Warning the Government that it had not thoroughly considered possible implications and the problems arising from passing new legislation in a hurry, Lord Tebbit continued: “It’s like one of my colleagues said: We’ve got to make these same-sex marriages available to all.
“It would lift my worries about inheritance tax because maybe I’d be allowed to marry my son.
“Why not? Why shouldn’t a mother marry her daughter? Why shouldn’t two elderly sisters living together marry each other?”
Lord Tebbit warned that divisions over gay marriage and Europe would push voters in the direction of UKIP.
The scale of the crisis was shown last night by a new poll that showed the Tories are down five points on just 24 per cent, 11 behind Labour, while UKIP – up six points in a month – was on 22 per cent, double the level of Lib Dem support and two points behind Mr Cameron’s party.
He said: “If they (UKIP) make significant gains in the European elections, I know there’s people rich enough to get involved and fund a significant campaign at a general election.”