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Keystone Law

Work 020 3319 3700
Fax 0845 458 9398

Jason Kallis

Work 020 7152 6550
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.


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

London: Insurance

Insurance and reinsurance litigation

Within: Insurance and reinsurance litigation

Keystone Law's insurance disputes lawyers handle coverage disputes and claims in the aviation, construction, property, personal injury, cyber insurance and professional indemnity sectors. Jane Harte-Lovelace focuses on workplace safety and property damage disputes, while Jason Kallis covers product liability and personal injury claims. James Crabtree, who joined from Cooley (UK) LLP in November 2018, advises on a wide range of issues in the insurance and reinsurance space.

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Product liability: defendant

Within: Product liability: defendant

Keystone Law's team is regularly instructed by insurance companies to handle a variety of product liability matters; it is experienced in handling disputes that arise from international trade and has a specialised marine practice. Key contacts at the firm are Antony Colman, who has strength in multiple sectors, including technology, food and medical devices, and Jason Kallis, who is a key contact for product recalls and resulting claims.

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