This photo, and more like it, appear in the Old Fire Station Whetstone Lane
thread and posts.
If it helps to date it, the Land Rover has a 1965 registration, but the Co-op van is LCM 499G, which is from 1968 and it doesn't look very new to me.
TV ariels on the old bank building - well spotted. Depending on the year it could be Rumbelows or Strothers before them.