The runways were completely removed and most of the dispersal pads in the early 80's. Interestingly the drainage systems and much of the electric cabling for lighting ect are still in place and can be seen on google earth.
I have not seen any documented evidence as to the date of build on the tower, only what I have been told by people who were based on or who lived near the Manby. I was also told that all of the runways were resurfaced only a few years before the base closed!
I am surrised by the lack of photos of the base, I have been searching for the past year, as I would like to make a display in the watch office for customers of Manby Motorplex. I have not seen a single photo of any of the runways or the control tower in use. I have a couple of the watch office and apron area but nothing else. It would be nice to know a bit more history of the site.