Jason Kallis > Keystone Law > London, England > Lawyer Profile

Keystone Law

Work Department

Construction / property litigation


Jason is a disputes lawyer specialising in insurance, construction, product liability, and property litigation. He acts for blue chip construction and property companies, insurance companies and their Insureds, high-net-worth individuals, retailers and estate managers.

Jason has extensive experience advising on product liability and professional negligence claims. In particular he advises on all insurance policy issues that arise out of disputes concerning products and professionals, including the recovery of insurance premiums on behalf of insurance companies and insureds.

He also has a wealth of experience of disputes concerning high-end residential properties, office developments, and small to medium sized civil engineering projects.

He advises on business disputes concerning small and medium sized companies, particularly in relation to partnership disputes, purchase agreement disputes, shareholder disputes, tax related disputes and general commercial litigation issues faced by such entities.

He has provided non-contentious advice on property developments to lenders, landowners, contractors and developers, and has advised on and drafted building contracts, warranties, and professional appointments.


2014Keystone Law Consultant Solicitor
2012-2014Plexus Law Associate Partner
2009-2012DAC Beachcroft LLP Associate Solicitor
2004-2009Mishcon de Reya | Associate Solicitor
2003-2004Sherrards | Associate Solicitor
2000Qualified as a Solicitor
1998-2003Elliots Bond & Banbury | Trainee Solicitor then Assistant Solicitor

Lawyer Rankings

London > Insurance > Product liability: defendant

Keystone Law offers ‘an amazing stable of thoroughbred lawyers‘ with a portfolio of major international insurer and manufacturing clients and a key expertise in dealing with property damage claims arising from fire and water. Antony Colman is experienced in product liability in both the UK and Germany, acting for insurance and manufacturing clients. Elaine Chan is an expert in commercial and insurance litigation and Jason Kallis specialises in issues surrounding product recalls, repair actions and property damage.

London > Insurance > Insurance and reinsurance litigation

Keystone Law‘s bench of specialists are active across the active in marine, life sciences and aviation sectors. James Crabtree and Jason Kallis are among the key names; they were recently joined by James Healy-Pratt, formerly of Stewarts Law LLP, an experienced aviation litigator with a history representing families and pilots/crew, as well as aviation insurers in aviation accidents. Antony Colman and Elaine Chan advise insurers and manufacturers in product liability claims.