Andrew joined Clyde & Co in 1994 and became a partner in May 2000. Qualified in England and Hong Kong, he specialises in general commercial litigation, shipping and trading disputes. He is also a member of the firm's Global Management Board.

Legal 500 have described him as follows:- "Probably the best lawyer for head on the block advice, Andrew Preston exercises sound judgment and has a gift of simplifying even the most complex problems." Andrew has been recognised by Legal 500 as one of the notable individuals at Clyde & Co and  clients describe him as "outstanding".

His shipping experience covers all aspects of Charterparty and Bill of Lading disputes in which he acts for a variety of corporations, oil majors, shipowners, P&I insurers, time charterers, bunker suppliers, cargo interests and their insurers nationally and internationally. Over the 20 years, Andrew has been litigating major cases, he has gained wide experience of Court litigation from Commercial Court through all appellate levels and arbitration work within LMAA, GAFTA, LCIA and ICC.

Andrew is an expert in multimodal transport disputes acting for a number of the world's largest through transport and port terminal insurers. Chambers has described Andrew as "top notch" and as a "very savvy operator." He is more focused on shipping issues but his general transport work has also attracted the attention of clients who say he "listens carefully to our needs and then translates this listening into action without delay".

On commercial matters he acts for a wide range of major corporations particularly in the telecommunications sector representing them in complex national and international disputes before the English Courts and ICC Arbitrations.