One of the places I visited in London during my recent recent trip was The Mix, a research consultancy founded in 2012. Almost exactly a year ago, they transitioned to a four-day workweek, and have had a great experience with it.
To mark the anniversary, they released a report (coauthored with Strategy of Mind) about their four-day week, which you can download here.
It’s quite good, and I say that as someone who knows a LOT about this subject now (thanks entirely to lots of very smart and dedicated people sharing their stories with me).