Here are my 4, but the provenances on the first two are dodgy as they are only word of mouth so, i'm not certain of their authenticity;
1) 2nd pattern B2 (purportedly from a local of 'reserved occupation', the Royal Observer Corps, and possibly Auxiliers (Churchill's underground army).... or from the 101st airborne who were billeted locally).
I pretty sure the scabbard is a replacement (totaly different wear and looks more modern anyway)
2) Indian 'ring and dot'. (purportedly from a Far East RAF pilot, but no further details)
3) 3rd pattern. (belonged to a local para and is named 'Stan', but no surname. well sharpened and used as boot knife).
4) Modern one issued around 2008, good markings including broad arrow.
Anyone see any problems with these? more photos are possible.