I think I know the areas you are talking about(will know for sure when you post your photos) with the blast shelters where I think the mess was now visable since the trees have been cut.The bomb store I thought was further along the road turning right at the crossroads to where the raised earth bays are in the woods each side of the road.

Hi Martin I put photos of these parts on an other thread last year and someone thought that the bakelite item could be the base of an old phone.