Uniform identification

[GeorgeLesnik]

Default Uniform identification
Hello everyone,

Slightly different request to identify uniforms of family members from pre- and post-WWII.

I understand the first picture is of a Royal Navy or Royal Marines private, the second of a young private in the Royal Ulster Rifles and the third (same man as the second) in the North West Frontier.

Keen to know if you can figure out anything else.

Appreciate your help.

George