Colleen is well known for her practice across a broad range of commercial law including shipping, commodities and international arbitration. She appears regularly before the Commercial Court and arbitration tribunals in disputes involving the international sale of goods, charterparty construction, cargo claims and jurisdictional issues. She regularly advises and acts for shipowners' defence clubs and is happy to accept direct instructions. She has also acted for some of the world's largest commodity traders in sale of goods disputes. She also has experience advising in superyacht disputes. She has been recommended in the Legal 500 and in 2007 she was named by The Times online as one of 10 "Future Stars of the Bar" in the areas of competition, commercial and shipping law.
In additional to her commercial law practice, Colleen also has considerable expertise in both UK and European Competition law. In 2008- 2009 Colleen was the Principal Legal Adviser at OFGEM (Office of Gas and Electricity Markets) with responsibility for all competition law matters as well as general public and regulatory law issues. She was appointed as a Junior Counsel to the Crown (C Panel) in 2010. She has since advised several government bodies including the OFT, the Competition Commission (both now the CMA) and OFGEM.
Colleen is a member of the LCIA and accepts appointments as arbitrator.