Your assumption is correct, sir!
I now live in Aberdare, in Wales - between Cardiff and the Brecon Beacons.
The picture was taken near Henley-in-Arden, Warwickshire and the school we were at (all except the girl in the photo) was/is in Solihull, West Midlands.
And I just noticed a shocking typo in my original post - I put 'where' instead of 'were'!
Cheers,
-Don.