I would agree with it being a GEC (or a Sobell) I have a 23" in my collection with the same front control layout. Also the controls on the back are grouped together in a line at the bottom on the right.
Like the set on this posting.
https://www.radios-tv.co.uk/communit...o-tvs/paged/2/
On the Pye dual standards the rear controls were dotted about the back cover the contrast usually towards the top the hold controls lower down.
It look as if the bottom of the cabinet is painted white which seems strange?