As I had the gut feeling, the strap was too big, both at the lug and the shoulder for my watch, so I am back to sqaure one. I got over excited just seeing what looked to the exact same style strap. It is almost certainly manufactured by Prospect, although clicking around I notice many other watch brands share that look (particularly Beltime and NOVUS).
Anyway if anyone has a steel strap with a 16mm straight lug, approx 19mm shoulder on some scrapper I would be more than happy to take it off your hands :(
Here's the original strap sporting busted lug on one end:
lug_old by
vampsinthe, on Flickr
and here is my excellent purchase (below) which I will be returning to
Timesofplenty, who I cannot fault in the speedy service and courteous communication...
watch_strap by
vampsinthe, on Flickr