His name will always be associated with the Peak Cavern system because John Beck's Chamber (beyond Surprise View Sump) was named after him a few years ago. John was the only person to set foot in that somewhat exclusive place (during a major siphoning exercise on Sunday 8th December 1985) until it was finally regained some 21 years later, after a protracted diving campaign. He was characteristically helpful in supplying detailed information whilst efforts were being made to pass the difficult 13 m sump barring the way. John was actually with me in Peak Cavern on the day I eventually got through that awful sump on 3rd January 2007. I'll never forget his beaming smile when I surfaced on the return and reported the news.
For a hilarious description of that 1985 siphoning epic see Nick Butcher's article in TSG Journal No.11, 1986.