Thanks for your kind words, I've given the link to this forum to Mr. Surrey so there is a good chance he'll see the reply's.
The booklet "A4 has casualties" is only a copied document.
Here a website with some info about the patrol and monument.
http://www.simonides.org/~recce43rd/page4.html
The monument is very near where I live and we (my brother, his kids and me attend the annual commemoration there on our wardead remembrance day (May 4).
I've done some additional research using old maps and photo's to try to correlate Mr. Surrey's memories of the layout and events which occured there.