Help needed with uniform

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Hi,
Please could members assist with feedback and observations on the uniform being worn in the shown picture.
It is my grandparents with one of my uncles. I don't know which, but will have been born in 1903 or 1907.
I am taking it that the photo was taken during WWII.
However (!!), both my uncles emigrated to Canada. We believe in the 1930s or 1940s. So I do not discount, my uncle wearing a Canadian uniform. (Contact has since been lost with them).
Certainly, the 2 stripes may a Corporal - please confirm. I've not see a cap like this before. It's a shame that the possible insignia on the side of the cap can't be viewed.
I'm also researching further into my uncles, their life before emigration and required information that would enable me to request potential WW!! Service Records.
Regards
Trevor

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