Unfortunately not really. All in Cheshire, then, now Tameside UK.
Having read my post though, I notice I missed an important salient point, their father (my uncle) lived in Hyde, Tameside (then Cheshire) which is where they lived. They would have been born in Ashton-Under-Lyne (also written Ashton-U-Lyne) hospital.
They would both have been born between 1953 and 1964, though not sure which was the older.
I have no clue as to their whereabouts - they could now be in Australia, UK, or Europe - they were both in the Forces so may well have settled elsewhere.
Thanks for pointing out my mistake on the missing info :¬)