World animal protection, 2024

https://www.worldanimalprotection.org.uk/siteassets/reports/confined-in-cruelty-report.pdf

Using EPR permits to chart an increase in UK factory farming

Outlines solutions for

They compile a load of great data:

Has a case study of a regenerative farm

Defra data for 2021 shows there were 10k pig units and over half keep 9 or fewer pigs
52k chicken units in 2023, most have fewer than 99 birds

Contains very detailed descriptions of animal welfare and how many animals are kept in certain conditions