I ferried BHLY to the docks before her departure to China, it was 1994, Southend if I remember. I think BISZ followed soon after.
BISZ was based at Redhill in the 1980s on UK charter work then moved to North Denes to join the offshore fleet in the late 80s after the BCAL buyout sprung the SPZ 7000 auto pilot equipped BIBG to Redhill on charter duty. SZ was always a low hour aircraft having spent so much time at Redhill where it wasn't that busy.