Originally Posted by Unregistered

its simple mathematics but ok i will do it for you.
most doctors are a level graduates so they would finish A levels at 18 years old, enter Uni at 19

19 - M1
20 - M2
21 - M3
22 - M4
23 - M5
24 - HO
25 - MO/R1 at this point guys might need to return to serve out NS
26 - R2 (F), NS Year 1 (M)
27 - R3 (F), NS Year 2 (M)
28 - R4 (F), R1 for simplicity sake (M)
29 - R5 (F), R2 (M)
30 - for certain specialty female would have exited and be a specialist, R3 (M)
31 - R4 (M)
32 - R5 (M)
33 - Exits for male

this is an ideal scenerio for a person who enter residency in their first try and pick a residency like GM which training last 5 years.