Post-2019 UK cabinet ministers last average of eight months, study finds

The brief tenure of Liz Truss – at 49 days the shortest spell drawn from the 17 countries covered in the report – was far below the average of 4.8 years for a UK prime ministerial term. Photograph: Frank Augstein/AP

Cabinet ministers in the UK’s post-2019 parliament have lasted in their jobs for an average of just eight months, a report comparing political stability across 17 countries has found, with Westminster also faring badly on a series of other metrics.

The study, Strong and Stable, which looked at 10 aspects of parliamentary and governmental stability in countries using various electoral systems over the past 50 years, concluded that proportional voting did not mean more volatility compared with UK-style systems, and often the contrary.