please empty your brain below

Great write up and well illustrated. Thanks DG.


Aldenham was used to repair/rebuild/do heavy maintenance on buses but was built to be an underground depot. One suspects its continued use for many years looking after buses was as much to avoid the embarrassment of a huge empty building in the middle of nowhere as anything else. Eventually, when big warehouses near main the motorway network were in demand, it was sold off - I suspect with relief.

The London Undeground Railway Society have just issued an updated version of their book "The Northern Line Extensions" which contains a huge amount of information complete with diagrams, maps and photos. It contains every thing you would want to know about this project and is well worth the price of £8.95. The video by Jay Foreman is excellent.

I also recommend Tony Beard's excellent book published by Capital Transport, "The Tube beyond Edgware". Coupled together with the Jim Blake/Jonathan James book, "Northern Wastes", they form a definitive record of the aborted Northern Line extensions of the New Works Programme 1935-40. And Jay's video is indeed excellent.

Blimey, I lived the the first 30 years of my life in the area (nearly went to Edgware school on the Spur Road estate on the roundabout there) and although I'd heard of Brockley Hill I only had the vaguest idea that it was somewhere nearby!

The underground was responsible for defining my awareness of what was around me. If it wasn't on a tube line, it didn't exist as far as I was concerned!!

I have travelled the Edgware Way thousands of times (my best school friend lived in Glendale Ave on the "thin line" link) yet I have never noticed the viaduct remains before. I shall rectify that at my first opportunity!

I went on one of the "Northern Heights" tour's about fifteen years ago that were organised by Jim blake and had a very enjoyable day out.

Abandoned Tube lines, my favourite topic! There's not much left of that viaduct now, but if you have a look at the area using Google Earth's historical imagery, you can see exactly how far they got.

Slightly off-topic, but here are similar traces of a line that never was, whose construction was deferred by WW2 and never resumed because of Green Belt legislation, at Chessington. The Southern was to have built a loop from Motpsur Park to Leatherhead. The line was opened as far as Chessington, but the earthworks continue some distance beyond, to a point adjacent to Chessington World of Adventures' whose main entrance. It would not take much enterprise to clear 70 years worth of vegetation and lay track to extend it there, (it would also make a handy park and ride facility when CWA is closed) but the service is in the hands of SWT, so it ain't gonna happen.

Another disused part of the Northern line is the shed you can see from the train, in Montrose Park as it passes by between Burnt Oak & Colindale. Dad always remembers it was something to do with the war and a spur was built there to accommodate an aerodrome, but now I think the shed is use as storage by the local football club!

Just googled and found a link. http://www.disused-stations.org.uk/h/hendon_factory_platform/index.shtml
You can clearly see the shed from Google Earth too.











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