Report - - Merstham AAOR Bunker - Surrey - March 2018 | Military Sites | 28DaysLater.co.uk

Report - Merstham AAOR Bunker - Surrey - March 2018


Camera Drowner
Regular User
I've been trying to getting into here for almost 4 years now, and finally the chance came up and I jumped on it.


AAOR's or Anti-Aircraft Operations Rooms were used to coordinate early warning radar information by filtering the RAW data from the radar to make the data as useful as possible. They also coordinated with ROC stations.

They all had the same layout:

Merstham AAOR Bunker, or sometimes known as Pendell Camp was constructed as an Anti Aircraft Command Operation room in 1951 when it was used until 1960. It formed part of the Pendell Army Camp that was demolished when the M23 was built in 1974.

In the early 1960s the bunker was taken over by the Home Office and used by the Metropolitan Police as its Southern War Headquarters. It remained in use until 1991 when it was stripped out. The site was sold in 2001 and slowly fell into dereliction.
At some point It was used to grow cannabis and was raided and cleared out. Evidence of planters and fertilizer still remain.


The Explore

I've been wanting to get inside here since 2014 when I found out about it, but had no luck. It's been used as a dumping ground for what I can only assume is stolen and dodgy goods by the owners, and things have moved around lots between visits over the years.
I once made it into the first internal room but was quickly thwarted by the massive blast door entrance and haven't had any further luck until now.

Within a few hours of finding out It was doable, I was there. What I hadn't realised was that the lower floor was flooded in about a foot of water, so we returned the next evening with waders so we could get down for a look.

I knew that the chance are that it was going to be pretty grim inside, and I wasn't wrong. It's smelly and damp, not helped by the whiff of diesel and oil that must have leaked from the Generator into the water. Some of the floorboards are....soft...to say the least, so tread carefully.

That said, it's a pretty cool place, and a rare beast. Don't see many AAOR's come up to often. Despite the abundance of grot, I liked it.



This photo is from 2014 when I first visited.

This is from 2017 where not much had changed.




A Predisposed Tourist
Regular User
The pics i had seen really didnt do the place justice,youve shown it well mate looks more than decent,and no pikeys :D

Oxygen Thief

Staff member
That's in much better condition than I expected actually.


28DL Member
28DL Member
It's open currently in very bad shape though underground level floaded up to knees and most wooden floor in the middle have rotten out :(


Camera Drowner
Regular User
Didn't know it was open. It was in a bad shape before anyway, lots of rot and flooding.


28DL Full Member
28DL Full Member
We tired last year just short after seeing this report and was shut tight shame about the rotting away.

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