H2S, used as recently as Blackbuck, was used in Lancasters in 1943/44.
As far as I'm aware it was still being used on the Victor K2s in GW1 in 1992, The last seven Victors were withdrawn in October 1993, which I assume was the end of H2S/NBC. As far as Vulcan 558 was concerned I understand the H2S was inoperative and they found their way around using a car sat nav!