Great footage Paul.
Mark - you wrote: "My last trip in there was about 20 years ago. I took the South Yorkshire Police Underwater Search Unit for a dive in return for them servicing the stolen DCRO band mask."
I didn't know about that. Please consider doing a dive log, however short, for the Newsletter. It doesn't matter if it was 20(ish) years ago; such events are well worth having in the record for the future, for all sorts of reasons.