There is a fair bit of ex-council housing in the area, so you might be right about that. If it is, I (personally) think it's a more attractive variety of it - I've seen quite a bit of council housing over the years and though quite harsh in some respects this one does have some interesting details to it that a lot of later definite council housing is lacking.
It could be a bit earlier, as suggested, of course. There's what may be an original fireplace (looks original to me, rather than a repo, but I'm no expert so could be completely wrong) of that sort of 20's/30's era, it's art-deco style, completely tiled surround with art deco type pattern formed by tiles, hearth tiled in same, etc. Bakelite handles on all the doors, too.
There's also what may be original tiling to the floor in the 'pantry' (now utility/boiler room) and the short passage to the side door (the door in the kitchen is an alteration to the original structure from what I can tell, but one commonly made since next door has similar but not identically placed).