Graham co-founded Sigma in 1996, and has been involved in investment and residential property development throughout his career. He is also the architect of The PRS REIT plc, the quoted first real estate investment trust to focus on new family rental homes. Graham is a leading figure in the UK Single Family Build-to-Rent sector – over 13,100 BTR homes delivered, c.£2.7bn of investment managed, generating over £197m of estimated rental value (ERV) p.a.
An experienced corporate financier and a qualified lawyer, Graham initially worked at Shepherd & Wedderburn and Noble Grossart. In 1994, he established Merchant Investments Ltd, a family investment vehicle, which specialised in large-scale residential development. Merchant Investments Ltd led the creation of the Winchburgh development, situated three miles west of Edinburgh. It is one of the largest single housing delivery sites in Scotland, with 3,500 new homes, five schools, a new town centre and railway station.