– Labour leader Ed Miliband
Many people will remember his historic visit to the UK in 2010 - which was a very special moment for many, especially Catholics, across the country.
His decision to stand down is a brave one and we know he will not have reached it lightly.
The choice of a successor is clearly an important one for the Catholic Church.
Our thoughts are with those who must make such a critical decision on behalf of millions around the world.
The Pope has made his first appearance at St Peter's Square window since his resignation announcement and thanked the faithful for their "prayers and support."