The symbolic photo opportunity has been designed to urge ministers to “unlock” cages for millions of hens across the UK.
Figures including Winston Churchill, David Lloyd George and Benjamin Disraeli were photographed alongside a chicken holding up a key next to them.
The Humane League says that the idea was inspired by its belief that only the government can deliver a nationwide ban on cages for laying hens.
The demonstration was joined by a number of notable politicians, including former Labour shadow chancellor and Hayes and Harlington MP John McDonnell, as well as the Green Party co‑leader and Gorton and Denton MP Hannah Spencer.
Downing Street has previously indicated that it is considering a ban on cages as part of its animal welfare strategy.
Its public consultation on banning cages closed in March, and ministers are yet to comment on its outcome.
“These are animals who can feel, who want to move, who have their own personalities. And they’re living their entire lives in spaces so small they can’t even stretch their wings,” said Dame Joanna Lumley.
“The government has said they want to end cages for laying hens, and that is wonderful. But it only matters if it actually happens. They are the only ones with their hands on the key.”
In light of this, The Humane League has warned that progress could stall without legislation, highlighting that a move to ban all cages could free as many as six million hens.
According to the Government’s own statistics, only 14% of eggs were laid by caged hens in the last quarter. Figures also showed that an overwhelming 94% of the UK public oppose the use of cages for laying hens.
Due to the cramped conditions endured by caged hens, their overall physical health is considered to be significantly poorer than that of free‑range hens.
Farmers can currently access up to £500,000 in government grants to transition to cage‑free systems, and a range of leading retailers, including Aldi, Co‑op, Sainsbury’s, Morrisons, M&S and Waitrose, have already gone fully cage‑free for shell eggs.
Barren battery cages were banned across the UK and the EU in 2012; however, the use of enriched cages, which enable hens to engage in some basic behaviours, remains legal.
Cordelia Britton, head of programmes at The Humane League UK, added: “For decades animal lovers have fought against cages, the very symbol of factory farming. Now ministers can unlock the cages of six million hens.
“The country has been going cage‑free for years, with widespread support from citizens and businesses alike. This government now has the chance to deliver a seismic victory for animal welfare.”
