I packed it in, in 2001 after 30;years as it was getting too expensive. A lot of the lads in our club were getting rebreathers and then tweeking them.
I felt it was getting stupid as a lot of divers were killed using this rebreather gear. Then a pal failed to surface a month after I had dived with him. The cost and my family’s reaction to his death final led me to give up.
Still wish I could go and dive the wrecks in Scapa though, too old now.