What a fine feast of semaphores that was. Thank-you.
Yes indeed. I climbed quite a few of those taller ones as well. When I first started on the patch we were based at St.Pancras Power Box seen in some of the photographs, but we were relocated to West Hampstead Power Box before it was commissioned in October 1979. Our patch then included the North London Line, West London Line and later 'out of hours' coverage of the Chiltern Lines. Oh, happy days!