Sorry if I wasn't being that clear. I was caulking the edge of a door frame
close to an adjacent wall, where I couldn't get the gun into the correct
position regardless of how a standard nozzle is cut. I've hit similar issues
when sealing around the back of bath mixers and the like.
So I reasoned someone must have come up with a nozzle that could be bent or
was fixed at say 45 degrees to get into awkward corners. US examples:
I've found some flexible fuel hose in the garage so if the equivalent isn't
available in the UK, I could just butcher a couple of nozzles and add fuel
line clips to keep them in place.