South Durham Steel and Iron Co. Limited.

• Corporate body
• 1860-1967

Sotheby's.

• Corporate body
• 1744-

Society of Instrument Technology, unknown

• Corporate body
• unknown

Society of Authors (Great Britain), 1884 -

• Corporate body
• 1884 -

Smith's Electric Vehicles, 1920 - 2017

• Corporate body
• 1920 - 2017

Slough Borough Council, 1863 -

• Corporate body
• 1863 -

Sidgwick and Jackson Publishers.

• Corporate body
• 1908-

Shell Guides

• Corporate body
• 1934-1984

Secker and Warburg Ltd

• Corporate body
• 1935-

Seaton Urban District Council

• Corporate body