None.
None.
These are the current codes of practice. It's a long read, but worth the effort because it shows that many of the keeping practises we accept here on BYC and other chicken sites don't meet the government code.
https://assets.publishing.service.g...f-practice-welfare-of-laying-hens-pullets.pdf
There is not one single aspect of the conditions at the allotment that meet these codes of practice.
For free rangers I would house 10 in the new coop maximum.
For confined 4 would keep stocking density in line with the code.
I worked out what it would cost to bring the conditions in line with the code when there were 20 chickens and it worked out at £2,300 excluding labour. Needless to write C wasn't prepared to pay.
I would pay for it myself if I had any faith in C being able to do their part adequately and any faith in this community shared responsibility business.
Nobody apart from a complete nutter such as myself is going to stand out in all weathers for a couple of hours every day watching chickens, cleaning coops, making sure everyone gets fed, etc. As you may have read here on BYC, chicken keeping is such fun.

A couple of weeks at the allotments right now would put paid to this piece of propaganda.
However, as with many government standards what is reasonable under the circumstances will be accepted at least until something goes wrong. In my opinion 26 chickens in a 1.1 metre square coop is wrong. 19 chickens in the new coop at 1.5 metres is still wrong.
Anyway, down to 13 now plus Henry of course.