++++ re-photograph to show seam in road surface

The last post in this list, Post 217 has not been found but is described as being on the bank of the Thames. This post is about 9 miles from the point opposite Post 217 on the North bank and about 5 miles from the nearest point on the bank. Why the vast gap? Have all the posts disappeared?
Some possibly have disappeared but I think the answer is also that this area was very marshy and there were few roads through it.

On Barking & Dagenham / Havering boundary. Note seam in road surface.

See this page on the Hainault Forest website

++++ bring in write up from wip_nor and link to link

Post 6 should be in the hedge just to the left of the sign but I could see no trace of it. Note seam in road surface.

Hog Hill Road. Apparently, lurking in the vegetation near the speed limit sign there is the Collier Row stone, one of the Hainault Forest boundary stones. The write-up says a "lamp post … was digitally removed". I presume by "lamp post" they actually mean the speed limit sign.

++++ decide on best place initinerary

TQ 446 984 At the point where Debden Lane, Loughton becomes Loughton Lane, Theydon Bois.
Opposite an house called “The Boundary”.
The retro-reflective sign in this picture says “Theydon Bois”

TL 437 004 Epping Road, Epping
about 500 metres SW of the Bell Common Tunnel

Three decent sized images in this this blog post. On the course of Potters Bar Golf Club - closed in 2018.
(A director fringe golf club closing! This forum thread makes one suggestion: “For a long time it was a Jewish-only course . It probably left it too late to try and change.”)

The Queen's Head public house (now apparently closed) stands 50 yards to the east of this post on the corner of Coursers Road and High Street, London Colney. The entry at Historic England for the pub says “canted front bay said to have been used for the collection of Coal Tax”.

TL 175 032 Shenley Lane, London Colney South side of Broad Colney Bridge

Harper Lane, Shenley Midway between these two Tax Posts. Just a post to announce that this is No. 100 but nice echoes of Tax Posts.
Cab drivers on night shift wish that all houses showed their numbers as clearly as this.

The house where W. S. Gilbert lived and died. (Cannot think of any connection with Coal Tax Posts!)

TQ 131 926, E side of Oxhey Lane, outside No 1 "The Hollies" and immediately NW of Burntoak Farm

TQ 091 920 maps
o/s NW i/s NW   o/s NE i/s NE
i/s SW o/s SW   i/s SE o/s SE

I cannot now recall where exactly I took this photo but I am pretty sure it is just the opposite side of the path from Obelisk 52. The railway at this point is the Metropolitan Line between Northwood and Moor Park. I cannot see why London County Council Tramways should need this box - more than an hundred yards from the nearest tram tracks.

I walked about 200m either side of TQ 084 923 and saw nothing

Gates to Moor Park Mansion at TQ 078 925

Moor Park Mansion itself, TQ 074 932

The seam in the road surface indicates that this is still a boundary - between Hillingdon on the left and Three Rivers district of Hertfordshire. TQ 078 923

TQ 069 915 at the junction of White Hill and Jackets Lane. Nothing seen

++++ when the above is properly organised, use this with proper GPS derived co-ords

Sewage pumping station. See Sewage flows again as Rickmansworth street floods.

Stockers House. Martin Nail lists this as Post 218 but we will show it more in geographical sequence.

The building just left of centre is Stockers House.

Stockers House below Stocker's Lock No. 82, Grand Union Canal near Rickmansworth, Hertfordshire, England. The house appears on the extreme left in this image. In the foreground is a Coal Tax post listed as No. 218 in this list.
The house was built in 1861-2 by the City of London Corporation for the inspector of coal traffic on the canal. The height is explained because its site is on the downstream side of the lock and there was a need to be able to see boats approaching from the upstream side. Listed Building No. 1173911.

A collection of old tools on display beside the lock plus an old sign with the stern warning the towing path is private property … there is no public right of way. In fact most canal towpaths are not rights of way but "permissive paths".

or Post 75
Posts 74 and 75 both probably lost forever during the building of the M25 which can be seen in the background of this image. The Wraysbury (or Wyrardisbury) River may well have been moved by a few yards.
Similarly Post 149 probably disappeared during the building of the M25. Compare with Posts 80 and 81 which appear to have been relocated during the building of the Wraysbury (or Wyrardisbury) Reservoir

Mad Bridge

The Nail list gives a description of TQ 037 770 on S bank of stream at NE corner of grounds of Poyle County Infants School.
It is probably the same school which is now called Pippins Primary School. A better grid ref for the post is probably TQ 0360 7692 and the post may be visible from Pippins Park accessed off Raymond Close

TQ 034 766 Poyle Pump S side of Bath Road about 10 yards E of junction with Dickens Place

Opposite side of bridge

with Plate 77 visible at far left

Reservoir sheep

Wraysbury Road, Staines

The London Stone - the great … great grandparent of the posts.

just upstream of Walton Bridge, near to Post 94

The Wikipedia article about Thames Conservancy shows this post

109, TQ 141 622 Copsem Lane, Oxshott
Corner of The Rythe private road, south of Esher Common Roundabout

TQ 1407 6220 Copsem Lane, Oxshott
Corner of The Rythe private road

Copsem Lane
Warren Lane

110,  TQ 140 618 Copsem Lane, Oxshott
junction with Sandy Lane and Warren Lane

TQ 16641 59948 Malden Rushett outside "The Star"

TQ 173 601, edge of Ashtead Woods 800 yards south of Rushett Farm, Malden Rushett

about 200 yards south west of Post 116

TQ 178 606, edge of Ashtead Woods 500 yards south east of Rushett Farm, Malden Rushett

Has been repositioned some time in the last nine years

My Addison-Lee satnav showing that I am at this location.

In the wood about 100 yards south of Post 119. The water tower of the former West Park Mental Hospital. As in other former hospitals, the tower will probably be retained as part of the redevelopment for housing

TQ 181 609, near Woodcock Corner, 250 yards S of Glanmire Farm, Epsom
I am dubious about whether the post numbers hereabout reflect the true sequence

Looking from Post 129, we see Posts 132, 130 and 131

Motts Hill Lane, Tadworth

Footpath leading to Withybed Corner

Pond midway between Posts 143 & 144

Post 148 can be seen in the distance on the right

Martin Nail describes this as Margery Grove. Either the roads were renamed at the time the M25 was built or, more likely, Martin Nail got it wrong. Post 149 was possibly right where the motorway now is.

Hogden Bottom (I think)

Try this image as a jigsaw

On the Brighton Road midway between Posts 163 and 164 marking the boundary between:
Reigate and Banstead / Croydon
Highways Authority / Transport for London - this being a trunk road

TQ 3120 6176. Someone sent me this picture and asked what is it? It is painted on a wall in Foxley Lane, Purley near the junction with Russell Hill Road, ie. at the junction with those two roads and the Purley Way and Pampisford Road.
The text is “DOT N^o. A23 1900 R”. DOT is Department of Transport, A23 is the road number and 1900 R is the entry in the DOT’s list. But list of what? The answer is: list of walls, bridges and other structures which were the responsibility of the DOT. (I think I have seen similar signs on bridges.) The name Department of Transport existed between 1976 and 1997. It and its successors are responsible for trunk roads except, as the "HA/TfL" notice in the previous image indicates Transport for London looks after this wall.

But why? At some stage, probably at the time of the creation of the Purley one-way system, this bit of Foxley Lane was widened necessitating a retaining wall which became the responsibility of the DOT.