oldMohawk
gone but not forgotten
Although the pic in #484 is not too clear there appear to be no tram lines on the road surface so it is after 1949 when trams were discontinued. Post#438 shows the tram tracks being removed in 1954, so if removal of the tracks at the terminus occurred at the same time, the date of the pic could be later than 1954. It looks like Eric's suggestion of mid 1950s is correct.The car bottom left in the picture appears to be a Ford Mk1 either Cortina or more likely Zephyr, they weren't launched until 1951 so it has to be after that, my first thoughts when the picture was posted was mid 50s.
Ps. the car next to it is a Ford 100E Anglia/Prefect, the were launched in 1953.
With regard to zebra crossings, the 1959 pic in #419 shows no zebra markings probably because back then they did not use them on crossings near traffic lights.