Definitely a Safir and I read the story in a mag or online a few years ago. A new stretch of unopened bypass near Northampton or Coventry or somewhere like that and the pilot couldn't resist. His dad took the pic I think. Actually I think his dad is on the bridge. When? About 1980?
I did a Google lens search on the image and got a Facebook link with details - can't paste it here...
Last edited by treadigraph; 7th Aug 2022 at 17:12.