Darren Salliss – Director & Costs Lawyer

Darren is the company’s director and is a qualified costs lawyer regulated by the Costs Lawyers Standards Board. He is also a member of the Association of Costs Lawyers.


Darren has extensive experience in various areas of costs law accrued over a period of more than 28 years working for costs drafting and solicitors firms in London and Kent.

Throughout his career Darren has acted for and/or against; private individuals; companies (including large corporations and shipping companies); patients of the court of protection; mortgagees; insurers and reinsurers; litigants in person and government bodies; whether they be receiving parties, paying parties, or interested third parties.

Darren’s experience has included; drafting large, complex bills of costs (including a number of multi-million pound bills and arbitration costs schedules); drafting Points of Dispute, Replies to Points of Dispute and statements of costs for security for costs applications and other applications; the Precedent H costs budgeting process and; attending detailed assessment hearings.

Darren has dealt with the recovery of costs in relation to many types of claim including; shipping disputes; insurance/reinsurance claims; media claims; aviation claims; Court of Protection proceedings, medical negligence and other professional negligence claims; white collar crime; catastrophic injury claims; claims against the MOD and; solicitor act assessments.

Darren’s wide range of experience means he brings considerable commercial insight and value to new cases.


Following his A-levels, Darren joined law firms in London working as an outdoor clerk and accounts assistant while taking the Legal Executive study course. Having taken a job as a trainee costs draftsman, he decided to stick with costs and went on to qualify as a Fellow of the Association of Law Costs Draftsmen. He was one of the first to qualify as a Costs Lawyer in 2008.


Darren began his costs career in 1991 within a firm of solicitors in Bromley, Kent where he dealt with Legal Aid and private client costs claims in family and personal injury matters, and claims for costs in RTA claims on behalf of insurers. Since then, Darren has worked at an independent costs agency and a number of firms of solicitors including Wallace LLP (then Wallace & Partners); Hamlins LLP (including a stint as a case handler in the Mortgage Repossessions Team) and; worked for over 10 years at international law firm Clyde & Co LLP during which time, Darren dealt with various high value costs claims including those concerning shipping disputes, insurance/reinsurance claims, Solicitors Act disputes, medical negligence and other professional negligence claims and catastrophic injury claims. 

More recently Darren spent 6 years at boutique law firm, Joseph Hage Aaronson LLP (JHA) in High Holborn, dealing with claims for costs against HMRC in respect of some of the largest and most complex tax group litigation claims, including ‘Test Claimants in the CFC and Dividend Group Litigation v HMRC’ and ‘Test Claimants in the Franked Investment Income (FII) Group Litigation v HMRC’ that included claims for costs in the High Court, Court of Appeal and Supreme Court and references to the Court of Justice of the European Union.

Other matters included claims for costs in the General Court of the CJEU, white collar criminal matters, judicial review proceedings, medical negligence and catastrophic injury claims and other complex and high value litigation and arbitration claims for high worth individuals and corporations.

At JHA, Darren set up and managed a small team of costs lawyers, establishing a new costs practice area for the firm and extending the Costs Team’s service offering to external ‘costs only’ clients. During his time at Clyde & Co and JHA, Darren had also been responsible for advising on funding issues, including drafting the firms’ Conditional Fee Agreements and Damages Based Agreements and assisting in funding due diligence exercises.

In August 2020, Darren finally decided to set up his own costs consultancy from his office in Welling, offering competitive rates for commercial legal costs advice and representation through Salliss Law Costs Consultancy Limited.

Outside of costs:

In between the odd fly fishing trip and trying to teach himself piano, Darren enjoys spending time with his family. He is also looking forward to touring the UK and seeing more of the French country and coast in the family’s campervan.

Feel free to contact Darren to discuss an arrangement that suits you.