Re: Cockie at pt. 5.
I believe there are something like 30-odd 'standard' grids available to Spectator compilers.
Without wishing to sound too 'nerdy' - the one that our new compiler Madrigal has used this week has not been seen for quite some while. I can however find it in Crossword 2591 (Get Over It by Fieldfare) for 11 February 2023. So just over a couple of years ago now.
It's certainly not one of the more attractive grids, but double unches have definitely occurred in this series and this suggests that this grid is indeed one of the 'standards', albeit an infrequently used one (probably for obvious reasons).