The King's Dikes between Newgate and Warden's Close were let to Christopher Barker, tanner in 1717 and then to his son Joseph Barker in 1729. In 1730 the open areas were occupied as gardens by a Mrs Barker and a Mr Robinson. By 1734 John Clayton, merchant, had bought Barker's right in the ground. On his death the lease passed to his brother Snow Clayton. The dikes were cultivated albeit unsuccessfully. In 1792 John Soulsby assigned part of the Dykes for construction of a Poor House, but the scheme was abandoned. The rest of the lease was assigned to Christopher Blackett, a Newcastle coal and lead magnate in 1801. In the 1790s Blackett had been approached by John Locke, a London lead merchant, and the two men formed a partnership in October 1798. When Locke failed to buy the existing site at Elswick (HER 4116), the partners bought the gardens in Gallowgate in 1798. Development of the Locke, Blackett and Company's Lead Works began. By the Spring of 1799 six white lead stacks were being built, and the first two had been completed and were working by the end of June. The remaining stacks were completed in August 1799. By August 1790 work was underway on three furnaces and buildings for the manufacture of red lead. By June 1800 a Boulton and Watt steam engine had been installed to grind the red lead. In September 1800 the firm also began to manufacture lead shot - firstly at one of Blackett's collieries at Wylam, but by the 1820s at the Gallowgate works. From the outset the Locke and Blackett partnership was ambitious to succeed. Blackett obtained manure, essential as part of the manufacturing process, from the cavalry barracks on the Town Moor. They offered higher wages and better conditions than the Elswick works, thus attracting some experienced workers from the rival firm. High standards of hygiene and welfare were maintained, even a free early breakfast for employees. The scale and layout of the Gallowgate works can best be seen on the detailed plans produced by Thomas Oliver, 1830, Robert Burnett, c.1840, first edition Ordnance Survey, 1850 and the Goad Insurance Plan. Before 1830 two ponds or reservoirs had been built over the infilled town wall ditch. The shot-shaft was sunk by 1826 at the latest. The pit was 220 feetdeep and 6 foot in diameter. When two tons of shot had been dropped into the pit it was uncovered and a workman lowered down to recover it. The pit probably went out of use soon after 1906. By the beginning of the 20th century Locke, Blackett & Company were under competitive pressure due in part to the inappropriate location of the lead works, with no easy tensport link, in a developing commercial and residential area. Production of red lead and lead shot ceased in 1905. In 1928 the firm was taken over by Associated Lead Manufacturers Ltd and the Gallowgate site put up for sale. It was cleared before the start of WW1 and the site bought by United Automobile Services Ltd for a bus depot.

A coach house and stable was in existence (possibly newly built) in 1730, when Thomas Armstrong, Hostman was granted a lease. The ground to the east was enclosed and described as "a waste". On Armstrong's death it passed to his administrator, also Thomas Armstrong, and Rev. Henry Wastell, who conveyed the building to Joseph Bell of Ryall, Northumberland, in 1759. By 1785 the building had become a slaughterhouse with a "dunghill" on one side, owned by the Mayor, Edward Mosley.

The historian John Brand identified earthworks in the Warden's Close as relics of the Civil War siege, these are probably the linear features on Thompson's plan of 1746 and can be equated with the "complex series of ditches and ponds" destroyed without being adequately examined or recorded in the course of forming the Bath Lane car park in 1987. Following the Civil War the town wall ditch had been leased to a James Turner, who was unable to make any profit from the land because of the "trenches". By 1676 the dikes between Newgate and Warden's Close were in the hands of a Andrew Hairoppe and subsequently passed to Christopher Barker, tanner in 1695. In 1730 the open areas were occupied as gardens by a Mrs Barker and a Mr Robinson. By 1734 John Clayton, merchant, had bought Barker's right in the ground. On his death the lease passed to his brother Snow Clayton. The dikes were cultivated albeit unsuccessfully. In 1792 John Soulsby assigned part of the Dykes for construction of a Poor House, but the scheme was abandoned.

Two plans of Newcastle were prepared by Jacob Astley in 1638/9, prompted by the need to refortify the town as war with Scotland threatened. The northern and western parts of the town suffered damge during the Civil War seige of 1644, during which St. Andrew's Church (HER 1486) and the town wall was bombarded by a Scottish artillery battery under Lt. General Baillie sited somewhere near the Leazes. The town wall between Newgate and Andrew Tower was breached and the church itself was still under repair in 1708. A cannonball supposedly found embedded in the wall of the Morden Tower was formerly displayed there. Grey states that the suburbs out of Newgate and Pilgrim Street were "ruinated in these late Warres".

Shown on Ordnance Survey second edition map.

Shown on Ordnance Survey first edition map.

House, later diocesan offices. 1880 by A. Gibson. English bond brick and rendered eaves coving with plain tile roof. Queen Anne style. 2 storeys, 3 wide bays the outer ones projecting. 3 steps to central double door under deep shell hood flanked by sashes. First floor openings have flat brick arches. Coved eaves with dentilled cornice. 4 tall chimneys. Dwarf walls with chamfered stone coping flank steps to door. LISTED GRADE 2

Shown on 2nd edition Ordnance Survey map. Recently offices for Newcastle General Hospital. Recorded ahead of demolition in 2009 by ARS. The building was constructed between 1854 and 1893 and was originally two semi-detatched villa style houses. It was constructed with narrow lime jointed bricks of white clay with sandstone quoins and mouldings. The roofing was of slate tiles and white brick chimney. A north west block was added in 1906 and the buildings were amalgamated c.1951. A survey of the interior revealed that the layout and style of the majority of rooms had changed significantly probably in the 1950s. The only original features were the windows and in some rooms, ornate ceiling coving.

Shown on Ordnance Survey second edition map. Bowland Lodge is now [2004] used as a residential care home, consisting of what was originally two substantial late 19th century semi-detached houses. A large modern extension has been added. The original rear wings of the property have been altered with piecemeal alterations and additions. The main body of the property is unaltered from that depicted on a plan of 1885, which shows the proposed large additional side-wings which were added to the houses. There was a stable block to the rear. The original outbuildings have been demolished - only the eastern gable wall of a former outside toilet survives. The original low retaining wall around the edge of the terrace survives on the eastern side of the building surmounted by decorative cast-iron railings. The original garden wall survives on the east and western sides. There is decorative stonework incorporated into the western entrance to the property.

Shown on Ordnance Survey second edition map.