Tricky one, that, Liz, without a date, as uniforms changed over the decades, and Regiments.

My first gut thought was band members: Guys Left & right wearing the same forage cap, and Sam Browne.

The centre guy at the back certainly looks like a band member..

And front & centre: Is that a conductors baton he is carrying?

Doesn't look like a family group.... but lack of date, or badges makes it tough.....