This report looks at online job advert data for tech roles in the UK since 2016. It finds the number of adverts across all sectors has declined sharply since early 2022, but this decline has been faster in tech, particularly ‘core tech’ occupations like software development and IT. The nature of tech jobs and the skills required has also been changing fast. The report begins to explore possible explanations for this change, including international competition and AI, and highlights the importance of work like The Hg Foundation’s, to ensure that those already underrepresented in the sector aren’t left further behind.