If there was a Polish shop there, and it seems there might have been, it's gone. Without speculating, put the two together with the fireball and there's truth in your second guess. Those things make a hell of a mess; five died in Boston Lincs a long while ago.
Just about 30 years ago I was at Leicester Poly (De Montfort Uni for the modernists), lived on Stretton Road, just a few hundred yards from this.
It gives me no pleasure to say, I absolutely fcuking hated the place. A shithole par excellence. Hinckley Road 30 years ago made the less salubrious parts of Manchester look like Rodeo Drive. And I’m a Liverpool-supporting (plastic) scouser saying that.
Still, I’m eternally grateful to Leicester. If I hadn’t binned college there I would never have joined up.