There are some pictures in Ian Inskip's excellent book about Glamorgan's war down south that has photos of the indentations left by the presumed explosion of bombs dropped on the 1st May by the Daggers of the Torno flight. However, I believe these bombs were 500 lb Spanish BRP bombs. Unfortunately, I cannot find that photo on the web.
I had a reply from the A4 driver. He will send me a "long" explanation of their choice of weapons. I will post it when I get it, and have translated it.