Signum Services Ltd is the investigative arm of Thomas Miller. The investigators have long experience as career detectives in the Criminal Investigation Department of the London Metropolitan Police and as senior detectives on various specialist squads at Scotland Yard. They can be contacted for advice and assistance on any claim or loss which affects a Member. They can also give loss prevention and security advice. The investigators are available to travel anywhere in the world to make enquiries in respect of a claim. Signum maintains close contact with law enforcement agencies around the world and holds membership of International, European and UK law enforcement associations.

Department telephone: +44 20 7283 5616
Department fax : +44 20 7626 8379

Michael Carroll

Michael Carroll
work +44 20 7204 2257

Download vCard

Mike Carroll joined Signum Services after retiring from the Metropolitan Police in November 2006. He was a career detective for 30 years, serving in various departments at New Scotland Yard. He specialised in serious and organised crime, including the investigation of armed robberies.


David Thompson

David Thompson
work +44 20 7204 2258

Download vCard

David Thompson joined Signum Services in January 2013 following his retirement from the Metropolitan Police. In his 30 year career as a detective David specialised in the investigation of serious and complex crimes and served at various locations throughout London and at New Scotland Yard. 


People Finder

Search filters
Search filters

Emergency Contacts


If you need to call our offices out of hours and at weekends, click After Office hours for a up to date list of the names of the Duty Executives and their mobile phone numbers. 

Ship Finder


This Ship Finder is updated on a daily basis. Members who need to advise the Club of updates to their recorded ships' details should advise their usual underwriting contact.