Hi Brian
It was re-registered as G-KASS on 16/03/1989 and pasted through several owners before being sold in the USA on 10/06/1993 and registered as N125GK until 08/13/2009
info from GINFO at http://www.caa.co.uk/application.aspx?catid=60&pagetype=65&appid=1&mode=reg&fullregmark=KASS
and FAA Registry at http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=125GK
regards
Chris