How interesting. Shame you couldn't have taken more of the original building. I went there a few times from about 71, aged 11 or so. Then it had a fancy name which I cant recall at the moment, but it was always an assessment /remand centre, before being moved on to a childrens home etc. Essex county council/social services would send people there from the courts. Sometimes for a few weeks, sometimes for many months. One or two were lifers, like dear old Patrick Shepherd who had mental illness and had been there forever. It was very much like a children's home (this is pre-leverton era) it had school periods in the dining room. Days out and great adventures in the grounds with Mr Green...sadly often killing things like rabbits etc. He also took us to church sometimes in a pony and trap. Also camping in South Weald etc. There was a small gatehouse/lodge at the lane entrance where the man in charge lived, a MR Hays...fine old gentleman. The white block enclosure to the south side is original of the period and was the kitchen area. It had a boiler house underground to the left of the main entrance to the building, I suspect under the white wall area. Mr Grumpy was the snot who lived in the adjacent big house at the top of dark lane. Always moaning about something we did...as if!! lol Happy days for a feral kid. I'd love to go back and have a butchers before its ruined once again into flats and houses. Mind you in this day and age it might be a saving grace for the old place.
The dog units use many of these old places for training, as do firearms units etc. There used to be an interesting one at silver end airfield and you could see the targets in the rooms of the old RAF station buildings, which I think may still be there despite being sold off in the not too distant past.