The UK Government’s ‘Uplift’ initiative to recruit an additional 20,000 police officers in England and Wales is well underway, but the challenge of balancing new recruits with those leaving posts means not all forces are expanding at the same rate; in the latest in a series of articles on the police workforce, Policing Insight’s Ian Wiggett looks at the key issues of service leavers and joiners, the pandemic effect and the need for more accurate data.