Black Redstarts in the centre of Norwich

Linda and I popped into Norwich this morning: it being a fine morning, I took the camera in my 'man bag'! After a bit of shopping, we staked out the area at the top of Westlegate and, after a short wait, heard and then located a singing male Black Redstart. He spent a lot of time on the roof of the 'Big C' charity shop and it seemed to us his nest can't be far away...