Paul Arter, Derek Boyle and Michael Mannix conduct a successful and close business as Costs Lawyers having worked together in chambers for a period of some 30 years in the City of London. Each member of the team operate their own independent business but also work in association under the umbrella name of AMS Costs.

Together they are considered to be one of the most experienced and formidable teams of experts operating in the field of legal costs with a wide and varied depth of experience, which is reflected in their client base comprising of global law firms, niche law firms, high street practices, accountants and insurers.

The Team


The team deal with all areas of costs litigation. We are regularly retained on high profile commercial cases and are also instructed on substantial personal injury and clinical negligence actions, construction, shipping, insolvency, defamation and intellectual property matters, professional indemnity litigation and VAT Appeals. We have been retained in actions outside the jurisdiction and have acted as independent experts in arbitration proceedings. The team are equally instructed to act on behalf of Claimants and Defendants by clients ranging from major law and accountancy firms to high street firms of solicitors. Instructions are also accepted from company and corporate entities.

 All of the team regularly attend and conduct advocacy on Detailed Assessment hearings.



Our aims are to provide a personal and tailored service specific to the requirements of each individual client. It is our view that a close working relationship with clients is invaluable in achieving effective and positive results.

We have experience in all aspects of cost litigation. Our expertise and practical approach is with a view to reaching the most cost effective solution.

Services provided include:

  • Bills of Costs
  • Points of Dispute
  • Replies to Points of Dispute
  • Negotiations
  • Detailed Assessment Hearings
  • Solicitor and Own Client Billing and Solicitor Act Assessments
  • Statements of Costs for Summary Assessment
  • Estimates for Case Management
  • Cost Budgeting
  • Security for Costs
  • Cost Audits
  • Seminars

Contact Us

For more information on any of the products or services offered, please contact us directly at:

Central Court,
25 Southampton Buildings,

Email : ams.costs@btconnect.com

or at our personal email addresses:

Michael Mannix - mike@mmannix.co.uk
Paul Arter - paul@artercosts.co.uk
Derek Boyle - db@dsboylecosts.co.uk

Tel : 020 7353 1165
DX Number : 150, Chancery Lane

Arter & Co Ltd is a registered company in England and Wales.
Company No. 5930432
Registered Office:
1 Mason Way,
Kent, ME3 8GT


DS Boyle & Co Ltd is a registered company in England and Wales.
Company No. 4669655
Registered Office:
Devonshire House,
1 Devonshire Street,
London W1W 5DR


AMS Costs Ltd is a registered company in England and Wales.
Company No. 8319470
Registered Office:
Mountfield Court,
The Approach,
Dormans Park,
East Grinstead,
West Sussex, RH19 3NU

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