Just wanted to point something out.
The Kyarra is a very high profile wreck, everyone knows about it, and many new divers qualified abroad, opt to dive this for one of their first UK dives. It is the skippers job just to take the divers there, what happens after they jump off the boat is not the skippers problem and is outside their control.
Unfortunately there have been many incidents on the Kyarra over the years, and I think it is because new divers are not planning their air/deco, going too far inside etc. All the stuff that we take for granted when diving UK wrecks. The Kyarra is deceptively deep, and needs to be treated accordingly, with strict air management, redundancy etc.
I think that all this points to the Kyarra taking more than its fair share of casualties, compared to other UK wrecks
Please note I am not casting aspersions on the experience or otherwise of the missing diver, I'm simply pointing out that the general statistics are against the Kyarra because of its profile, and the number of people who dive it, many newbies to UK diving.