Civil law enforcement agency in Blackburn. Also offers financial investigations, credit referencing and asset recovery.

Kent agency offers insurance and intellectual property services, employee vetting, marine surveillance. Information about all services, together with code of ethics, overview of equipment used, and quotation form.

Adoptions, missing persons and surveillance company in Wembley offers financial investigations, credit referencing and asset recovery.

Based in Essex, specialising in fish poaching, undercover operations, matrimonial, fraud and accident investigations and security consultancy.

London agency offers legal support services, debt recovery, personal, chat dangers, neighbours and whistle-blowers' enquiries.

Offers anti-social behaviour reports, neighbourhood investigations and evidence gathering for property buyers. Details of services, examples of problems, news and forum. Based in Stockport.

Lancashire company offers criminal defence investigations, locality checks for house buyers and corporate fraud.

Offering tracing, collection and legal services, private and commercial investigations. Brief overview of services, and contact information. Based in Leeds.

Leeds based firm offers tracing, status enquiries, surveillance, statement taking and repossessions. Features investigators' profile and links to other sites.

A Cheam, Surrey based company offers intellectual property investigation, anti-counterfeiting, corporate fraud, computer forensics, and pharmaceutical investigation services.

Staff checking agency using undercover means to check the workplace.

Company in Preston offering personal and corporate security, crisis management, money laundering and legal investigations. Site has location map and investigator profile.

Windsor based agency specialising in corporate fraud, money laundering, de-bugging, financial intelligence, insurance cases and drug screening.

Former special services personnel specialising in high-risk security, close protection, international work and de-bugging.

Liverpool agency handling credit referencing, tracing, corporate insolvency work and debt recovery.

Manchester based company offers money laundering, asset tracing and forensic accountancy services.

Offers process serving, tracing, test purchasing, surveillance, staff vetting and company status reports. Based in Staffordshire.

Business risk analysis, fraud investigation, computer forensics and asset tracing from a company based in London and Edinburgh.

Salisbury based company offering counter-terrorist surveys, surveillance, aviation security, VIP and hostage negotiation services.

Blackburn based firm offers process serving, tracing and services to the legal profession.

Insurance claims investigations, trace and status reports, surveillance, sweeps and bug detection, property verification.

A London based company offers corporate security, electronic counter-measures, fraud investigation, intellectual property and surveillance.

Documents served, affidavits prepared and sworn, fraudulent claims investigated, personnel checks by company in Keighley, Yorkshire.

St Albans company involved in staff checks and CV verificiation.

Based in Beaconsfield, Buckinghamshire. Offers enquiry agents, process servers, planning and reporting services.

Hertfordshire based firm specialises in pharmaceutical investigations, training in fraud awareness and interview techniques.

Based in London, provides tracing and status enquiries, surveillance, risk analysis and asset protection services.

Glasgow based company has criminal records checks, debt recovery and GPS tracking equipment.

Surrey based firm offers tracing and address confirmation, equipment hire and business research services only to investigative and security agencies.

An Ealing based company offers domestic investigations, partner surveillance and bugs and debugging equipment.

Based in Hertford, offers enquiries concerning absconders, adoptions, genealogy, status and means reports and credit searches.

Cheltenham agency for tracing missing persons, corporate fraud checks, surveillance, background checks, due diligence.

Newton Abbot agency offering accident reports, claims services, debt recovery, statement taking and surveillance.

Aberdeen company - tracing missing relatives, domestic enquiries, witness and commercial tracing and obtaining statements.

London based company offering debugging, missing persons tracing, surveillance, competitor intelligence and polygraph testing.

Brighton based firm offers surveillance, tracing of missing persons and video/photographic evidence for matrimonial and insurance fraud. Describes its rates and services.

Reading based firm handling process serving, trace enquiries, witness statements and affidavit preparation.

London based agency specialising in divorce, matrimonial, bogus injury and insurance claims. Freephone number.

London based agency offering process serving, asset tracing, road accident investigation and personal injury casework. Investigations for industry and individuals, tracing, and asset location.

Offering surveillance, pattern of life studies, close protection services and satellite tracking. Based in Gloucestershire.

Solicitors' agents, status reports, security advisors, accident investigations, from a St Helens company.

Middlesex firm offering training, employee screening, security consulting and process serving. Requires Flash.