Reflected

It's only for about a week every year that the sunlight hits the windows of no 16 and reflects on to the brick wall opposite - I know I've blipped it before but couldn't locate it.
 
Edit: found it! 

I'd paused on my way back from the shop to take this and was startled by a voice very close to me saying 'Hi M, you could take a photo of us!' It was Fiona in a car with some friends, participating in the slow traffic queue round the square. So I did! See extra.