GFK: 020 7890 9000

Contact GFK on their UK phone number 020 7890 9000 for general enquiries about their market research services, to request a survey and for feedback about a recent mystery shopper visit.

Alternatively you can send written enquiries to GFK by posting letters to their UK head office address: GfK UK, Floor 2 & 3, Dukes Court, Duke Street, Woking, GU21 5BH, United Kingdom. However be aware it may take up to a week to receive a reply.

GFK is a global provider of market research services with a range of solutions including surveys, data analytics programs and a host of mystery shoppers.