Greg specialises in commercial contracts, structured asset finance and equipment leasing for upstream, midstream and downstream transactions His experience extends to floating oil & gas solutions, power stations aviation, shipping, rolling stock and other infrastructure.

He has advised on tax–based and cross–border lease financings, sales and purchases of leasing companies and leasing portfolios, defaults and contentious aspects of asset finance transactions as well as restructurings and workouts. He has repeatedly been recommended as a leading individual by Legal 500 and by Chambers as "phenomenally intelligent", "one of the top lawyers in his field", "an accurate and pragmatic lawyer" who is "terribly able", "pragmatic and straight–talking" and considered "to excel in the context of complex structures", with a "thorough, competent and unflustered manner".