London company offers corporate intelligence, background reports, litigation support and tracing services.

Bristol company offers debtor tracing, theft and fraud investigations, credit checking and industrial enquiries.

London based agency offering corporate intelligence, asset searches and pre-nuptual enquiries.

Manchester agency with 24 hour freephone offers surveillance, employee enquiries, counter industrial espionage, matrimonial and theft investigations.

Based in Torquay, specialising in investigation of suspect claims, reconnaissance and surveillance. Order form available.

London agency offers background screening and checks on employment, qualifications, references and finances.

Agency in London traces individuals and assets, deals with employee reports, vetting, mobile, static and electronic surveillance. FAQ and order form available.

Tunbridge Wells firm offers asset tracing, background investigations, pre-employment screening and surveillance.

Specialises in corporate intelligence, surveillance, tracing and undercover operations. Based in Durham.

Cheshire based company dealing with surveillance, undercover work, nanny vetting and photo evidence.

Directory of detectives and investigation agencies organised by region.

A Peterborough based Inquiry firm offers staff background and pre-employment screening services.

Different levels of background checks at appropriate prices from a company in London.

Cheating partners, insurance fraud, nuisance neighbours investigations for private and corporate clients.

Midlothian company offers specialist employment vetting including personal, educational and character information.

Located in Glasgow, company offers surveillance and corporate fraud investigation, trademark protection and employee testing casework.

Based at Heathrow, London, describes mobile and static surveillance, theft and fraud enquiries, tracing witnesses.

Buckinghamshire agency offering corporate due diligence, fraud, corruption, vetting and leaks enquiries.

Coventry based agency specialising in suspect adultery, evidence gathering, house buying and nuisance neighbour investigations.

Franchise network based in London offer statement taking, financial investigations, witness tracing and character enquiries.

London based company offers company investigations, tracing fraudsters, financial status enquiries and CV checks.

Specialist friend finder services with graduated price structure and adoption search, based in Belfast.

Based in Surrey and specialising in tracing debtors, relatives and beneficiaries.

Company investigates staff theft, unfaithful spouses, missing persons and benefit fraud.

Oxfordshire company offers corporate, legal and credit management services - employee vetting, criminal investigations.

Chelmsford company specialising in insurance, banks, private, legal, retail and trade enquiries.

Specialises in the commercial financial and industrial sectors. Describes its services and includes case studies. Based in Blackheath.

Private investigation firm based in Dartford catering for private and corporate clients. Company and service details.

Surrey based company providing a specialist missing person tracing and matrimonial surveillance service nationwide.