Facts International Ltd
- Address: Facts Centre, 3 Henwood, Ashford, Kent. TN24 8FL
- Tel: 01233 637000
- Fax: 01233 626950
- E-mail: sales@facts.uk.com
- Website: www.facts.uk.com
Fieldvision Ltd
- Address: 20 Wrotham Business Park, Barnet, Herts EN5 4SZ
- Tel: 020 8449 5105
- Fax: 020 8449 0900
- E-mail: debbie@fieldvision.co.uk
- Website: www.fieldvision.co.uk
FieldWorks
- Address: The Butlers Wharf, Building, 36 Shad Thames, London. SE1 2YE
- Tel: 020 7357 8522
- Fax: 020 7407 4530
- E-mail: info@fieldworks.co.uk
- Website: www.fieldworks.co.uk
FML
- Address: 1st Floor, 9 Northburgh Street, London. EC1V 0AH
- Tel: 020-7553-6777
- Fax: 020-7553-6771
- E-mail: info@fm-ltd.co.uk
- Website: www.fm-ltd.co.uk
GfK Mystery Shopping
- Address: King Charles House, Park End Street, Oxford. OX1 1JD
- Tel: 020 7890 9000
- E-mail: chris.white@gfk.com
- Website: www.gfkmysteryshopping.co.uk
GfK NOP Field
- Address: Ludgate House, 245 Blackfriars Road, London. SE1 9UL
- Tel: 020 7890 9000
- Fax: 01245 553738
- E-mail: claire.blythe@gfk.com
- Website: www.gfknop.com