Based in St Albans, Hertfordshire, (on the M1, M25, A1 corridors), we are conveniently situated to cover London, Essex, Bedfordshire, Kent, Surrey, Middlesex, Cambridgeshire Berkshire and Buckinghamshire. However, it is not uncommon for us to be on assignments in the North or further South. Recent assignments have been performed abroad with distance proving to be no object, whilst still providing first class services. Unlike most companies of this nature we employ our own Operatives on a full time basis rather than subcontract the work out to others in the field.
Security UnLimited are professional private investigators, process servers and surveillance operatives. Our daily assignments revolve around varying aspects of professional investigations, for a wide range of corporate, legal and private clients.

Please feel free to browse the site and to either telephone 0800 0439 324 or email admin@securityun-limited.com with your enquiry. If your preference would be for contact with a female agent then please email - ashleigh@securityunlimited.co.uk

Normally any guidance as to what service you require is given free of charge. 

PROCESS SERVERS, PRIVATE INVESTIGATORS, SURVEILLANCE, INVESTIGATIONS, DEBT RECOVERY, VEHICLE REPOSSESSIONS, ASSET RECOVERY, GENERAL INVESTIGATIONS & INTELLIGENCE GATHERING, DETECTIVES, DEBUGGING, TECHNICAL COUNTER MEASURES, ELECTRONIC COUNTER MEASURE SWEEPS, PROFESSIONAL SURVEILLANCE, COVERT SURVEILLANCE, PROCESS SERVING, CFA SIGN UPS, SECURITY COURIERS, DETECTIVE AGENCY, ENQUIRY AGENTS, MOBILE PHONE FORENSICS 

Aylesbury, Ashford, Ascot, Amersham, Basildon, Barking, Braintree, Bedford, Birmingham, Barnet, Borehamwood, Billericay, Bournemouth, Brighton, Brentwood, Cambridge, Chelmsford, Chelsea, Chesham, Chigwell, Caddington, Chertsey, Dagenham, Dunstable, Dover, Debden, Docklands, Epping, Enfield, Edgeware, Eaton Bray, Flitwick, Feltham, Grays, Guildford, Hampstead, Hatfield, Hitchin, Houghton Regis, High Wycombe, Hitchin, Hemel Hempstead, Harrow, Hampstead, Harlow, Hounslow, Heathrow, Ilford, Iver, Knebworth, Kettering, Kings Langley, Kings Lynn, Loughton, Luton, Leighton Buzzard, Loughborough, Milton Keynes, Markyate, Northwood, Northolt, Northampton, Oxford, Pinner, Potters Bar, Queensbury, Ruislip, Radlett, Stanmore, St Albans, Southall, Staines, Slough, Stevenage,Tring, Toddington, Twickenham, Uxbridge, Watford, Wembley, Windsor, West Drayton, Welwyn Garden City, Yeading,

Postcodes covered AL1, AL2, AL3, AL4, AL5, AL6, AL7, AL8, AL9,

 CM1, CM2, CM3, CM4, CM5, CM6, CM7, CM8, CM9, CM10, CM11, CM12, CM13, CM14, CM15, CM16, CM17, CM18, CM19, CM20, CM21, CM22, CM23

E1, E2, E3, E4, E5, E6, E7, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E18,

HA1, HA2, HA3, HA4, HA5, HA6, HA7, HA8, HA9,

HP1, HP2, HP3, HP4, HP5, HP6, HP7, HP8, HP9, HP10, HP11, HP12, HP13, HP14, HP15, HP16, HP17 HP18, HP19, HP20

IG1, IG2, IG3, IG4, IG5, IG6, IG7, IG8, IG9, IG10, IG11,

LU1, LU2, LU3, LU4, LU5, LU6, LU7,

MK1, MK2, MK3, MK4, MK5, MK6, MK7, MK8, MK9, MK10, MK11, MK12,

N1, N2, N3, N4, N5, N6, N7, N8, N9, N10, N11, N12, N13, N14, N15, N16, N17, N18, N19, N20,

NW1, NW2, NW3, NW4, NW5, NW6, NW7, NW8, NW9, NW10

RM1, RM2, RM3, RM4, RM5, RM6, RM7, RM8, RM9, RM10, RM11, RM12, RM13, RM14, RM15, RM16, RM17, RM18, RM19, RM20,

SG1, SG2, SG3, SG4, SG5, SG6, SG7, SG8, SG9, SG10,

SL1, SL2, SL3, SL4, SL5, SL6, SL7, SL8, SL9,

SS1, SS2, SS3, SS4, SS5, SS6, SS7, SS8, SS9, SS10,

WD1, WD2, WD3, WD4, WD5, WD6, WD7, WD8, WD9, WD10, WD11, WD12, WD13, WD14, WD15, WD16, WD17, WD18, WD19, WD20, WD21, WD22,

Private Investigations, Private Investigators, Private Detectives, Enquiry Agents, Field Agents, PI's, Private Eyes, Gumshoes, Process Servers, we cover the whole aspect of general investigations and surveillance in all of the above areas