United Kingdom
ACOP
Brand Institute
Education Research Group (ERG Survey)
e-Research-Global
Focusline Surveys
Global Opinion Panels
GlobalTestMarket
Ipsos
Lightspeed Panel
Nielsen NetRatings
NOP Research
Opinion Bar
Opinion Outpost
Opinion Surveys
Opinion World
Panelbase
Palm Research
Permission Research
Planet Panel
Planet Pulse
Pure Profile
Reward TV
Spirit Panel
Springboard
SSI Survey Panel
Surveys.com
SurveyHead
Survey Savvy
Toluna
Tourism and Travel Study
U.K. Gamblers Study
U.K. Survey Panel
Valued Opinions
Vizu Panel