I know its your payslip but how can this be right?
Either:
1) Hundrendpercentplease is on a TRSS contract. (£39k is
basic TRSS SFO salary). Though unlikely for someone who joined as a low hours recruit.
2) Hundrendpercentplease is on a Cadet salary and paying off (approx £80K) Zero Hours-Type Rating training over the course of 7 years via a reduced salary.
3) Hundrendpercentplease is on a part time 75% deal (clue's in the user name).