please empty your brain below

Ha ha, yes all sounds highly interesting. Will try to remember to pop along for a look next time I'm on my way back from the airport.

My A-Z (on phone) has The Vale closed only one way at North Hyde Lane, all very mysterious. Will definitely have to investigate.
Google Street View shows a gate closing off The Vale to all vehicles except cycles and emergency services.

I would guess the actual highest point on a public road could well be the nearby bridge carrying North Hyde Lane over the M4.
Yes, there's a gate at North Hyde Lane. If I'd known you'd all be so interested, I'd have uploaded this photo of the aforementioned barrier earlier on.

And yes, the bridge over the M4 is definitely higher, but presumably the official London Borough Top rules disallow aerial structures.
The mystery of that locked gate deepens: the link to your photo of it is BROKEN! This is deeply suspicious...

dg writes: Fixed now, thanks.
"every 90 seconds" ...bit less than that I reckon. Plus the sound starts before the plane is overhead and continues after passes...then the sound of the next one starts in the distance etc. It driving me crazy most days. The "night-time" flights seem to have increased. Very often flights begin at 4.30am. I am sure my mental health has suffered. My education may have suffered too. It been a background blight on me for many many years. Think the flight path and Heathrow in general is in the wrong place. There are too many "vested interests" it seems to make the change that surely must one day take place become reality.
I fear your "35m contour" may be illusory. OS MasterMap shows a spot height of 29.6m at the junction of The Vale and Meadow Waye and another near the junction with Heston Avenue. I suspect the contour may actually be a 30m one. There are a couple of 31.1m spot heights on Hayes Road on the far side of the golf course, and 33.8m on the canal bridge 4m over the borough boundary.
There is an official published list of London Borough tops, and this categorically states that The Vale is the top of Hounslow.

I fear you're right though, and the true top is elsewhere, nearer the golf course and/or canal.

The official list predates digital OS availability, and was put together by someone staring at maps trying to deduce where the contours and spot heights peak. It's probably inaccurate.

Ollie's put together a possibly-much-better list based on OS Terrain 50 data, and he reckons the canal's the place too. But he admits his based on averaging out heights across 50mx50m grid squares, so may also not be accurate.

I'd love a definitive list... maybe the Ordnance Survey, or someone else, can oblige.
Ah, excellent, thanks for the photo of the gate. A-Z wrong (again). Shocking.

Timbo, thanks for the GSV link, I briefly considered looking on GSV but poor (mobile) connection in rural AndalucĂ­a dissuaded me.
As an old boy of Heston living at 3 North Hyde Lane for many years (wonderful place and times) I have long been fascinated as to what is the exact geographical cause of the hill elevation going North up Vicarage Farm Road say from Summerhouse Avenue, paralleled by the similar elevation going up Springwell Road. I speak particularly as a paperboy carrying a very heavy load of papers up that B****y hill on my bike towards Cranford Lane. Does anyone know??????










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