Women and the Church, which campaigns in favour of women bishops, is "hopeful but not completely confident" that they will be introduced in the Church of England.
Speaking ahead of a key meeting where members of the General Synod will be asked to give final approval to legislation backing women bishops, Hilary Cotton said, "It is the same people there, those who are opposed on principle have said that they are voting against."
"They are not representative of the wider Church of England," she added.
More top news
Danny Boyle's Trainspotting 2 replaces the tagline "Choose Life" with "Choose Facebook, Twitter, Instagram".
Settled and very cold across the UK this weekend with a widespread, overnight frost.
BT has announced it is increasing prices for broadband as well as some calls and is to begin charging TV customers for BT Sport.