The Bishop of Durham, Justin Welby, who was formally announced as successor to Dr Rowan Williams, insisted that he supported the Church of England’s opposition to same-sex marriage, The Daily Telegraph reports.

But he promised to reassess his own traditional line on the issue “prayerfully and carefully” and pointedly emphasised his support for civil partnerships.

It comes amid speculation that the Church of England – which fears the introduction of same sex marriage could threaten its position as the established church – might reconsider whether or not to offer formal blessing services for same-sex couples as a compromise.

The Church is due to publish a review of its stance on issues around sexuality next year.

Bishop Welby, 56, made his remarks in his first public appearance since being officially confirmed as the next Archbishop of Canterbury.

In a relaxed and confident performance he said he spoke of his belief that Britain could be coming back to faith after years of declining congregations.

He said he was “utterly optimistic” about the future of the Church, insisting that “the tide of events is turning” and that he was taking over at a time of national “spiritual hunger”.