This is a beautifully clear and bright picture of St Paul's Cathedral in London which was taken on Watling Street near the junction with Bread Street. Although I don't know the exact date, other pictures in the box this was in were taken in the mid 1970s and I would guess this is a similar date.
The only other piece of information I have is that the camera used to take the picture was a Rolleiflex, which probably accounts for the very good quality image.