Grosvenor Investigations
- Process serving and accident investigations in North East England and the rest of the UK.
- http://www.grosvenorpi.co.uk

Employment Investigations
- Specialises in employment investigations only.
- http://www.employmentinvestigations.co.uk

Private Investigators UK
- Cheltenham based company for UK and international missing persons investigations, background checks and surveillance.
- http://www.uk-private-investigators.com

First Response
- London company offering undercover investigations, criminal and civil legal work and forensic examinations.
- http://www.private-investigators.uk.com

J S Knott Legal Services
- Chatham, Kent, company offers tracing, bailiff services and database enquiries.
- http://www.jsknott.co.uk/

Team Investigations
- Newcastle based company with male and female staff offering people tracing, surveillance and security services.
- http://www.teaminvestigations.co.uk

1st Priority Investigations
- Investigation franchise agency operating in Ireland, the UK, USA and Europe.
- http://www.pilimited.com/

Minx007
- All female team with infidelity investigations, surveillance and employee sickness enquiries.
- http://www.minx007.co.uk

UK private investigator
- Background investigations, pre-employment checks, telephone searches.
- http://suspected.co.uk

UK Honey trap
- Handling fraud, matrimonial and birth parent enquiries. Based in Surrey.
- http://ukhoneytrap.co.uk

Bluemoon Investigations
- Company in South West England offering services for the legal profession and commercial client. Site also has gadget shop.
- http://www.bluemoon-investigations.co.uk

Coast2coast Investigations
- Relationship enquiries, background checks and process serving covering the South-West of England.
- http://www.investigate4u.co.uk/

Private Investigators Yorkshire
- Yorkshire firm with child tracking, divorce and camera services.
- http://www.shadowatch.co.uk

Baker & Co.
- West Midlands company with legal, commercial, industrial, finance and public services. Freephone number.
- http://bakerandco.net

Bruce Burgess Polygraph Testing
- Surrey based company with polygraph (lie detector) testing for infidelity, sexual abuse and theft cases.
- http://www.bruceburgess.co.uk

The Referencing Agency
- Employee screening for industry.
- http://www.thereferencingagency.com

A.Y.Investigations
- Company offers process serving, surveillance, matrimonial, and photographic services.
- http://www.ayinvestigations.co.uk/

Access Personal Checking Services
- Southport company offering criminal records checks on specified employment categories and background enquiries.
- http://www.criminalrecordchecks.co.uk/

MC Investigations
- Based in Beaconsfield, Buckinghamshire. Offers enquiry agents, process servers, planning and reporting services.
- http://www.mcinvestigations.net

Nor-West Caledonian Legal Agency
- Glasgow based company has criminal records checks, debt recovery and GPS tracking equipment.
- http://www.norwestcal.co.uk

Link Personnel Screening
- St Albans company involved in staff checks and CV verificiation.
- http://www.personnel-vetting.com/

Southern Investigations
- Brighton based firm offers surveillance, tracing of missing persons and video/photographic evidence for matrimonial and insurance fraud. Describes its rates and services.
- http://www.southern-investigations.com

Carratu International PLC
- A Cheam, Surrey based company offers intellectual property investigation, anti-counterfeiting, corporate fraud, computer forensics, and pharmaceutical investigation services.
- http://www.carratu.com

ISE Associates
- A London based company offers corporate security, electronic counter-measures, fraud investigation, intellectual property and surveillance.
- http://www.iseassociates.com/

CTR Investigation Services
- Former special services personnel specialising in high-risk security, close protection, international work and de-bugging.
- http://www.ctr-investigations.co.uk

Haymarket Management Services
- Business risk analysis, fraud investigation, computer forensics and asset tracing from a company based in London and Edinburgh.
- http://www.haymarketco.com

Specialist Private Investigators
- London based agency specialising in divorce, matrimonial, bogus injury and insurance claims. Freephone number.
- http://www.specialistpi.com/

Argus Investigations
- Lancashire company offers criminal defence investigations, locality checks for house buyers and corporate fraud.
- http://www.argusinvestigations.co.uk

SIP International
- London based company offering debugging, missing persons tracing, surveillance, competitor intelligence and polygraph testing.
- http://www.sip-international.co.uk/top.htm

Daniels Silverman Commercial Investigators
- Liverpool agency handling credit referencing, tracing, corporate insolvency work and debt recovery.
- http://www.danielssilverman.co.uk/

Private Investigation Services
- Surrey based firm offers tracing and address confirmation, equipment hire and business research services only to investigative and security agencies.
- http://www.private-investigator-uk.co.uk

Investigations UK
- Insurance claims investigations, trace and status reports, surveillance, sweeps and bug detection, property verification.
- http://www.globalinvestigations.co.uk/

WM Associates
- Middlesex firm offering training, employee screening, security consulting and process serving. Requires Flash.
- http://www.investigation.co.uk/

Euro-link Investigations Ltd.
- Based in Hertford, offers enquiries concerning absconders, adoptions, genealogy, status and means reports and credit searches.
- http://www.euro-linkinvestigationsltd.com/

Answers Investigation
- Offers legal support, enquiry services, and debt recovery from offices across southern England..
- http://www.answers.uk.com/

Corporate Fraud Solutions Ltd
- Company in Preston offering personal and corporate security, crisis management, money laundering and legal investigations. Site has location map and investigator profile.
- http://www.corporatefraudsolutions.co.uk

Ada Associates
- 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.
- http://www.ada-associates.com

Assisted Recoveries
- Offering tracing, collection and legal services, private and commercial investigations. Brief overview of services, and contact information. Based in Leeds.
- http://www.assisted.co.uk

Southern Law Services
- Reading based firm handling process serving, trace enquiries, witness statements and affidavit preparation.
- http://www.slri.co.uk/

Burton Regan
- Leeds based firm offers tracing, status enquiries, surveillance, statement taking and repossessions. Features investigators' profile and links to other sites.
- http://www.burton-regan.co.uk

Shield Investigation Services
- Aberdeen company - tracing missing relatives, domestic enquiries, witness and commercial tracing and obtaining statements.
- http://www.shieldinv.co.uk/

Inkerman (UK) Ltd
- London and Kent based company offering counter-terrorist surveys, surveillance, aviation security, VIP and hostage negotiation services.
- http://www.inkerman.com/