Hi Emma, I don't know if you saw this picture, No. 148 would be the shop with the van at the front, in 1939 the shop was run by Edward Mears and was a 'machinery breakers' shop. I am very jealous I have never found a picture of my uncle's shop just across the road No. 143
EDIT: I'm re-checking this I think the shop with the van at the front is either 142a or 144 (used to be Dunn's fruit shop before it became Park Lane Pets). No 148 is definitely on the picture probably 2 doors closer.
ANSWER: No 148 is the right-hand of the 2 houses that appear to have newer brickwork on the front, I don't ever remember shops there, perhaps the brickwork replaced shop fronts? I'm sure someone on here will know.