[sjhuda]

It's based on the Centre for Cities report: "How productive are the UK's big cities?" which mentions Liverpool's, Leed's and Manchester's productivity growth and The State of London Report 2025 which reports London's productivity decline

https://www.centreforcities.org/publication/how-productive-a...

https://data.london.gov.uk/blog/the-state-of-london-report-2...