Joseph Paul de Leo

Sigma Capital Group Plc operates as a holding company. The firm engages in the provision of property asset management to residential and commercial properties. It operates through the following segments: Regeneration, Managed Property, Owned PRS Property, Venture Capital and Holding Company. The company was founded by Graham Fleming Barnet and Neil David Crabb in December 1996 and is headquartered in Edinburgh, the United Kingdom.

Part of Sackville Property Developments Ltd., Sackville Developments (Reading) Ltd. provides real estate development services. The private company is based in London, UK and was founded in 2004.

Six Bidco Ltd provides investment services.