Sorry I can't help with Wessex info, but the registration was reallocated to a BHL B212 which was crashed on the 30th June 1998, killing 5 (including the pilot), following the failure of the rotating scissors drive link descending through 1500 ft inbound to Port Harcourt (long messy story involving criminal culpability).
https://www.jetphotos.com/photo/170196
https://aviation-safety.net/wikibase/wiki.php?id=3337
Sorry for drifting....