That's a great excuse to come back ! Anyway, if the tower you mention is the one I think it is, it's probably one of two things.
Either the hose tower for part of the station fire section, or the parachute drying /untangling tower, although that's normally on the end of the packing shed, if such a tower was used. I'd have to see which one you mean, and check it out. It might even be the remains of the station static water tank - virtually all RAF airfields had a water tower, often visible long before you got within reach of the airfield, and these were mainly steel girder affairs, but, on 'permanent' stations, built in the 'expansion period' of the '30s, they could be brick, concrete, and sometimes quite ornate structures.