Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
James is an expert in the insurance and reinsurance field, known for providing detailed legal and strategic advice to insurance and reinsurance markets on claims, coverage disputes, international arbitration proceedings, in appeal proceedings, and mediation.
James also advises on the contractual terms and conditions of insurance and reinsurance cover, including corporate buyers of insurance on contract terms and conditions.
James has dealt with significant market loss events, such as the LMX spiral, property claims from the 2011 Japanese tsunami and New Zealand earthquakes, the 2022 Australian floods, and asbestos and environmental pollution exposures. His expertise spans both property and liability coverage, addressing complex issues from events like the collapse of Barings Bank, WorldCom, and the Argentine economic crisis of 2002.
He also advised on insurance issues arising from the Covid-19 pandemic, including business interruption and event cancellations. James has extensive experience in managing insurance and reinsurance portfolios in runoff and addressing insolvency issues.
In addition to his core expertise, he advises on disputes in broader commercial areas, including High Court litigation, appeals, and alternative dispute resolution (ADR).
James advises on insurance and reinsurance contracts, collateralised transactions, underwriting pools, and global programmes, often involving insolvency and regulatory issues across complex facultative and treaty structures.
Experience
James advises on coverage disputes involving class actions, construction claims, and banking liabilities. He represents insurers and policyholders in high-value quota share, excess of loss, and professional indemnity disputes.
Experience
James advises on complex coverage disputes and jurisdictional issues, with reported cases including AXA Re, Groupama, and Konkola. He acts in claims involving construction, financial lines, and marine and credit insurance.
Experience
James advises on pharmaceutical liability and clinical trial risk, defending excess of loss claims and advising life sciences sponsors and lenders on insurance in device-related and cyber-exposed trial contexts.
Experience
James advises on marine, offshore energy, mining, and construction risks, including claims from drilling operations, dam construction failures, and property damage or business interruption at energy and industrial project sites.
Experience
James advises German insurers and insurance groups on issues arising in both insurance and reinsurance matters.
Experience
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Recognised by Chambers Global for Corporate Finance: Mid-Market 2026
Recognised by The Legal 500 for Insurance and Reinsurance Litigation 2028, 2020–2026
Recognised by The Legal 500 for International Arbitration 2018, 2026
Recognised by Chambers UK for Insurance: Contentious Claims & Reinsurance 2022–2026
Recognised by Best Lawyers UK for Insurance Law 2023–2025
Recognised by Chambers and Partners Global Guide for Contentious Claims & Reinsurance 2024
Recognised by Who’s Who Legal for Insurance and Reinsurance 2018, 2023
Recognised by Expert Guides for Insurance and Reinsurance 2018
Finance Monthly’s Fintech Award for UK Insurance & Reinsurance Lawyer of the Year 2017
“James Crabtree: a real statesman figure. Totally unflappable. Highly intelligent. He has seen it all yet has a lively and fresh take on points. I would recommend him to any client.””
The Legal 500 2026
“James Crabtree and I go back more than 25 years. James has a deep understanding of the London and other global reinsurance markets, law, and mores. He is exceptionally attentive when it comes to communicating his experience and knowledge to younger colleagues, making this a well-informed team that always adds value.”
The Legal 500 2026
“His technical ability is matched by his ability to distil issues and suggest a course of action that is practical and achievable.”
Chambers UK 2026
“James is a meticulous solicitor with a thoroughly personal style. He also listens carefully to clients and brings deep experience to bear.”
Chambers UK 2026
“James is an exceptional legal advisor and is a great leader.”
Chambers UK 2026
“James demonstrates mastery over the subject area and is excellent to work with.”
Chambers UK 2025
“James is an exceptional legal advisor and is a great leader. ”
Chambers UK 2025
“James is excellent, he gets right down into the weeds. ”
Chambers UK 2025
“The star individual is James Crabtree. His attention to detail is exceptional, and he immerses himself deeply in his client's case.”
The Legal 500 2025
“James Crabtree is outstanding as an insurance and reinsurance lawyer.”
The Legal 500 2025
“James Crabtree is a pleasure to work with.”
Chambers UK 2024
“He is diligent, knowledgeable and a specialist in insurance and reinsurance.”
Chambers UK 2024
“James provides good service.”
Chambers UK 2024
“James Crabtree is an outstanding reinsurance lawyer who is meticulous, savvy and creative. I could not think more highly of him.”
The Legal 500 2024
“James Crabtree is an eminent practitioner and renowned for his expertise.”
The Legal 500 2024
“James Crabtree has a wealth of knowledge and experience in big-ticket cases. He tends to be involved in most of the major pieces of litigation in this sector. ”
The Legal 500 2024
“James is scrupulous with respect to detail and exceptionally invested in client service.”
Chambers UK 2023
“He is diligent, has good client management skills and gives good commercial advice.”
Chambers UK 2023
“James Crabtree is a fantastic solicitor.”
The Legal 500 2023
“Keystone has a profound practice in the insurance and reinsurance sector. The quality of advice benefits maximally from the experience and know-how of the individual team members, especially James Crabtree, whose advice is always considered, efficient and to the point.”
The Legal 500 2023
“James Crabtree: his knowledge of the insurance and reinsurance sector and industry is very strong and he is an experienced and trustworthy advisor to his clients.”
The Legal 500 2023
“James Crabtree is an absolute expert in his field.”
Chambers UK 2022
“He is an exceptionally knowledgeable and meticulous reinsurance practitioner.”
Chambers UK 2022
“James Crabtree is an eminent practitioner in insurance and reinsurance law with extensive experience and deep knowledge of the market. He is extremely kind, collaborative and a pleasure to work with.”
The Legal 500 2022
“James Crabtree is an outstanding business orientated lawyer, very structured, always on the top of the case.”
The Legal 500 2021
“Extremely detail-oriented solicitor who is exceptionally focused on client service.”
Chambers Global 2020
“Very balanced and sensible. ”
Chambers Global 2019
“Technically very strong with good attention to detail.”
Chambers UK 2018
“Strategic and business orientated.”
The Legal 500 2018
“James Crabtree ‘receives high praise from clients, who consider him an extremely savvy and well-versed lawyer, familiar with the intricacies of the field.’ Other similarly impressed sources describe him as a ‘very deliberating lawyer, who is calm under pressure’ and ‘provides legal solutions which are both effective and commercial.”
Chambers UK 2017
“Outstanding. ”
The Legal 500 2017
“Highly experienced and solution oriented.”
The Legal 500 2017
James qualified as a solicitor in 1988. Prior to joining Keystone Law in 2018, he worked at the following firms: