Anglo European Private Detectives Ltd. Private investigation firm based in Leeds. http://www.aepd.co.uk

Blue Print Investigative Services, BPI Investigations - services include video surveillance, child custody expertise, evidence gathering, and armed personal protection. http://www.blueprintpi.com/

Carratu International Investigation and fraud prevention consultancy provides blue chip clients around the world with specialist investigation services. http://www.carratu.com/

Corporate Investigation Service, Ltd. Private detective and security services. http://www.cis-services.co.uk

Crown Associates Independent private investigators offering a range of specialist services. http://www.crownassociates.co.uk/

D.A.C. Group Ltd Investigators, collectors and civil enforcement agents based in Durham, England. http://www.dacgroup.co.uk/

DetectivesUK.com Directory listing detective and investigation agencies. http://www.detectivesUK.com/

Friar Investigations Limited Private detectives offering surveillance, divorce enquiries, tracing status enquiries, and more. http://www.friargroup.co.uk/

Gaskill's Investigation Services Approved agents to the legal profession and commerce. http://www.detektives.com/

Global Intelligence Services Insurance fraud investigation, asset tracing, and strategic business intelligence. Based in Kent. http://www.gisvs.com

Hides Detective Agency Investigative agency based in Norfolk. http://www.investigations-international.com

Hobson Associates Investigation and research company providing world-wide services to industry, commerce and the legal profession. http://www.hobson-associates.com/

International Legal Network Ltd London detective agency providing a wide range of services. http://www.iln.uk.com

John F. Hope & Co. Private investigators with offices in Worcestershire and Birmingham. http://www.pijh.co.uk

KIS Detective Agency Private investigator and fraud specialist. http://www.kenyons.org.uk/

LegalAppeal.co.uk Professional detectives dealing solely in criminal appeals, miscarriage of justice, and false allegation cases. http://www.legalappeal.co.uk/

London Protection International Security, investigation and protection services. Based in London, Ontario. http://www.L-P-I.com

LRI Research Ltd London based investigative firm. http://www.lri-research.com

MC Eden & Associates Service to the legal and insurance professions, and to commercial clients. http://www.mceden.co.uk/

MEC Investigations Division Due diligence, assets searches, litigation enquiries, background. http://www.meconsult.co.uk/