Esc_Quaily
Songster
Heads up UK chicken keepers: Farming Today reported that, from October, all backyard chickens (and pigeons etc.) will have to be registered with DEFRA, not just those flocks over
It requires keepers to obtain a CPH number first (as has traditionally been required for flocks over 50).
Edited to add, Shad found it! https://www.gov.uk/government/news/new-measures-to-help-protect-poultry-industry-from-bird-flu
I wasn't sure where to post the Scottish version. Thanks for sharing the DEFRA link

In Scotland you have to register all birds kept outside. https://keptbirdregister.service.gov.scot/