This idea came from nowhere to become a flagship policy which Cameron is "determined" to put into force within this Parliament.
No manifesto mentions.
To mention in the Queen's Speech about Government intentions.
It is indeed Cameron's whim, and has come out of the blue.
Tory Blue.

""During the Labour Party (UK) leadership election, 2010, all the leadership candidates endorsed same-sex marriage as Labour Party policy.

On 21 September 2010, the Liberal Democrats, a junior member of the governing coalition, officially endorsed same-sex marriage when the party's conference in Liverpool approved a policy motion called "Equal Marriage in the United Kingdom".""

NOTE THE DATES!

Not from nowhere and not a Tory initiative. Find another dead horse to flog Keith.

Don T.