Scott soon began winning building contracts in the North East and was the main contractor behind several landmark buildings and structures within Newcastle, including Dr. Rutherford's Church (1860), the
Tyne Theatre (1867), the Restoration of St Nicholas' Cathedral (1873 and 1887), the Douglas Hotel (1874),
Byker Bridge (1878–9), St James' Congregational Church, (1882), the spire on St Mary's Cathedral (1885), a bank in Collingwood Street, (1888), alterations and added the
portico to
Newcastle railway station including the
portico (1889–1894) and rebuilt the
Redheugh Bridge (1899–1902), and the extension to
Armstrong WhitworthElswick Works. Among other contracts outside Newcastle Scott built the Mechanics' Institute, North Shields (1857), St Stephen's Church, Carlisle (1864), rebuilding
Ouseburn Viaduct, 1869, St George's Church, Cullercoats (1882), St George's Hall, Jesmond (1886), the reconstruction of Gateshead Workhouse, (1890) and the Crown and Mitre Hotel, Carlisle (1905). undertook additions to Chillingham Castle for the Earl of Tankerville and rebuilding work at
Haggerston Castle. The firm was also responsible for building several reservoirs and dockyards, including the
Hury and
Blackton Reservoirs, (1884 and 1889), the docks at
Burntisland (1872–75),
Ayr (1874–78),
Hartlepool (1876),
Silloth (1885), and the Thompson Graving Dock',
Belfast, (1904–12). Walter Scott and Company was an important builder of railway lines both in England and overseas. For the
North Eastern Railway the firm built lines to Bishop Auckland, Consett, Fighting Cocks, and Stockton with a new bridge over the Tees. There were also alterations at Darlington and the Forth Banks widening plus extensions to the railway along Newcastle Quayside (1867–70), the Saltburn to Brotton line (1872), and the Seaham to Hartlepool line (1905) For the
London and North Western Railway they built the Northampton to Rugby line (1877), lines to
Daventry, Huddersfield, Leamington, Stalybridge and building work at
Euston railway station, 1889. For the
Great Eastern Railway he built the
Shenfield–Southend and
Crouch Valley Lines, 1889 and the
Lea Valley lines from Edmonton to Cheshunt, 1890. The company built the
Kelvedon and Tollesbury Light Railway, 1904, the Stairfoot to Cudworth line for the
Midland Railway and the Hull to Barnsley line for the Great Central Railway both in 1899. (Newcastle Chronicle, 2 December 1899). For the
Great Western Railway the Aynho to Ashenden stretch of the
Chiltern Main Line 1906–10. The company was also one of the main contractors building London's Underground Railway system, beginning 1887–1890 with the
City and South London Railway In 1896 they constructed the extension of the
Central London Railway from Marble Arch to Post Office, Between 1902 and 1907 Walter Scott and Middleton constructed extensions to the
Great Northern, Piccadilly and Brompton Railway. Other underground works included the Extension of the
Bakerloo Line from Paddington to Queen's Park, 1912, the widening and alterations from Chalk Farm to Willesden, 1913, and the reconstruction of City and South London line from Moorgate to Clapham Common 1922–24. ==Publishing==