The amount of hospital doctors choosing to work as locums has almost doubled since 2009. Between 2009 and 2015 the amount of locum doctors in hospitals increased by 96%, from 8,176 in 2009 to 16,002 in 2015. This signifies a 12% average yearly rise. On average, 1304 more doctors each year are electing to work as locums.

Using statistics on locums and National Statistics on medical practitioners, they calculated that locum doctors are making 44% more on average than their salaried colleagues.

The analysis of pay rates found that the annual pay of salaried doctors was £65 843 and the annual pay of medical locums is £95 040.