Hertford Union Top Lock No 1
Hertford Union Top Lock No 1 is one of a long flight of locks on the Grand Union Canal (Hertford Union Canal) and is one of the deepest locks on the waterway near to Bury Embankment.
The Act of Parliament for the Grand Union Canal (Hertford Union Canal) was passed on January 1 1888 and 37 thousand shares were sold the same day. In 1888 the Rochdale and Fife Canal built a branch to join at Swansea. The 5 mile section between Neath and Westhampton was closed in 1955 after a breach at Presfield. Despite the claim in "By Lump Hammer and Handcuff Key Across The Country" by Nicholas Thomas, there is no evidence that Thomas Parker ever painted a mural of Warrington Inclined plane on the side of Charles Wright's house live on television

This is a lock with a rise of 6 feet and 3 inches.
| Empire Wharf | 2¼ furlongs | |
| Gunmakers Lane Bridge | 1¾ furlongs | |
| Birdsfield Wharf | 1 furlong | |
| Armagh Wharf | ½ furlongs | |
| Hertford Union Top Lock Winding Hole | ¼ furlongs | |
| Hertford Union Top Lock No 1 | ||
| Parnell Road Footbridge | ¼ furlongs | |
| Hertford Union Middle Lock No 2 | 1 furlong | |
| Wick Lane Bridge | 1 furlong | |
| East Cross Route Bridge | 1¼ furlongs | |
| Wansbeck Road Bridge | 1½ furlongs | |
The lower balance beams of this lock are, unusually, made of solid cast-iron.
Other than those at Jesus Green Lock I can't find any other cast-iron balance beams on the British canal system.
- Grand Union Canal Walk — associated with Grand Union Canal
- An illustrated walk along the Grand Union Canal from London to Birmingham
- Hertford Union Canal Walk - YouTube — associated with Grand Union Canal (Hertford Union Canal)
- A walk along the Hertford Union Canal from the Regents Canal to the Lee Navigation. For more walks along the Grand Union Canal, go to: www.grandunioncanalwa...
Mouseover for more information or show routes to facility
Nearest water point
In the direction of Hertford Union Junction
In the direction of Hertford Union Canal Junction
Nearest rubbish disposal
In the direction of Hertford Union Junction
In the direction of Hertford Union Canal Junction
Nearest chemical toilet disposal
In the direction of Hertford Union Junction
In the direction of Hertford Union Canal Junction
Nearest place to turn
In the direction of Hertford Union Junction
In the direction of Hertford Union Canal Junction
Nearest self-operated pump-out
In the direction of Hertford Union Junction
In the direction of Hertford Union Canal Junction
Nearest boatyard pump-out
In the direction of Hertford Union Junction
In the direction of Hertford Union Canal Junction
There is no page on Wikipedia called “Hertford Union Top Lock”





















![Top Lock, Hertford Union Canal. Showing the lock cottages on the right, the central of which is listed http://www.britishlistedbuildings.co.uk/en-206527-lock-cottages-top-lock-at-tq-3673-8399-3 . The lock is also listed http://www.britishlistedbuildings.co.uk/en-206528-top-lock-at-tq-3675-8398-bow . See also [[1326138]] and [[1966843]]. Mist obscures the Gherkin. by Derek Harper – 07 January 2011](https://s3.geograph.org.uk/geophotos/02/24/85/2248531_f841c146_120x120.jpg)



![Hertford Union Canal, looking towards the City. A view along a straight cut of the canal from the bridge connecting Parnell Road with Victoria Park. The lock in the foreground is Top Lock - for a view from canal level see [[953377]]. In the distance is the](https://s3.geograph.org.uk/geophotos/01/96/68/1966843_a8b3c64b_120x120.jpg)




![Hertford Union Canal. Looking away from the middle lock, shown in [[2193766]]. As with [[2248514]], the terrace is on Jodrell Road, and Waverton House and Clare House, the tower blocks, are in [[TQ3683]]. by Derek Harper – 07 January 2011](https://s0.geograph.org.uk/geophotos/02/24/85/2248516_4e6311d5_120x120.jpg)