Graham is a Fellow of the Royal Institution of Chartered Surveyors, and a registered expert witness, certified quantity surveyor and Fellow of the Australian Institute of Quantity Surveyors.

Graham is involved in the preparation, analysis, and submission of expert witness reports, addressing issues of quantum. He is retained to prepare reports on construction and engineering disputes in domestic and international arbitration, litigation, adjudication, and expert determination.

Graham has provided estimating, procurement, contract, claims (typically related to the valuation of delay and disruption, loss and expense and final accounts) and commercial management on a broad range of projects including rail, metro, power, steelmaking, oil and gas, airport, bridge, commercial, residential, civil, educational, health and industrial. He has worked with standard and bespoke main contracts and subcontracts.

WWL says that Graham has a strong reputation with peers and clients alike, who say he draws high praise for 'skillfully explaining complex quantity-surveying data and issues simply and practically'.

'Graham is a respected figure in the Australian and New Zealand markets, commended for his outstanding work dealing with disputes of quantum.'

His 'robust advice' and 'excellent presentation as an expert witness' receive further praise. Graham impresses market sources who remark he is 'highly professional, incredibly personable and adaptable in contentious matters'.

Graham is widely celebrated by peers and clients for his 'excellent technical and analytical skills'.