The 4 Day Week Foundation revealed that the total number of individual employees now working to this model stands at over 6,000 across 253 accredited businesses.

London has seen the highest number of these new accreditations, with Scotland and the North West also showing the strongest adoption of the alternative working structure.

The 4 Day Week Foundation suggested the latest figures show that UK employers no longer have any practical barriers to making the shift.

Joe Ryle, campaign director, said: “These companies are proving that there is nothing stopping organisations in the UK from moving to a four-day week."

“Across virtually every sector and region, employers are showing that shorter working weeks boost productivity, improve wellbeing and help attract and retain talent – all without cutting pay. The question is no longer whether it works, but how quickly others will follow.”

A total of 53 newly accredited organisations permanently adopted a four-day week with no loss of pay in 2025, with researchers in the US saying that working four days a week can help workers protect their mental health.

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