Deloitte UK Says British Workers Spend GBP 958 Million a Year on Self-Funded GenAI Tools

Deloitte UK said on September 16, 2026, that British workers are spending an estimated GBP 958 million a year of their own money on GenAI tools they use for work, putting a hard cost on the rise of shadow AI. The firm's inaugural GenAI Workforce Survey, based on 25,000 UK workers aged 18-70 and fielded online by Ipsos UK from May 7 to June 10, found that 63% have knowingly used GenAI for work and 24% use it every day.