Plus Four Market Research Limited

Full-service, independent market research agency, providing qualitative & quantitative expertise including field services & tab across UK and Europe

International

Focus Group Facility

Qualitative Research

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Last updated on October 21st, 2026

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What is Plus Four Market Research Limited?

We are an independent, UK-based full-service market research agency specialising in qualitative and quantitative research across the UK and Europe. Established in 1970, we have delivered over 23,000 research projects for international research agencies, brands and organisations.


We specialise in full-service qualitative research, providing US and international agencies with a trusted UK research partner. Our expertise includes focus groups, in-depth interviews (IDIs), online qualitative research, workshops, concept and product testing, taste testing and central location tests (CLTs).


Our experienced senior researchers manage every stage, from research design and methodology through recruitment, fieldwork, moderation, analysis and reporting.


With a dedicated point of contact and hands-on project management, we deliver reliable, actionable insights for standalone UK studies and multi-country European research programmes.


We also offer full-service quantitative research, including survey design, data collection, processing, tabulation and analysis. Individual services, including recruitment, fieldwork, moderation and analysis, are available to complement clients' existing research teams.


Our dedicated London viewing facility, The Qualitative Lab, is located in Wimbledon, South West London. It provides a professional environment for focus groups, depth interviews, workshops and product testing, with experienced hosting, audio/video recording and live streaming for remote observation. Available independently or as part of a full-service project, the facility welcomes UK and international clients.


Whether you need a UK qualitative research partner, European project coordination or a complete research solution, Plus4 combines decades of experience, senior-level expertise and the flexibility of an independent agency.


Contact us to discuss your next UK or European market research project.

Research Facility

Location

Suburban London

Building Type

Free Standing

Travel time from airport

50 mins

Travel time from downtown

20 mins

Facility Features

Catering facilities

Client lounge

High-definition TV

Office services

Onsite parking

Recording - Digital

Video-streaming

Wireless Internet

Research Facility Details

Recruiting capabilities:

Plus4 provides nationwide UK qualitative and quantitative recruitment as part of its full-service research offering, with recruitment-only support also available where required. Our established network of 700+ experienced supervisors, interviewers and recruiters covers the UK, supporting consumer research, including focus groups, in-depth interviews, online research, product testing and central location tests (CLTs). All recruitment is managed by our experienced in-house field team, with double-screening procedures to support participant quality. Our team works to the Market Research Society (MRS) Code of Conduct, with Recruiter Accreditation Scheme (RAS) accreditation among relevant internal and external team members.

Recruiting area:

UK Nationwide

Facility Rooms

Room types

Dimensions

Capacity

Observation capacity

Focus Group

One-on-One

Living Room

5.8X3.5meters

10

8

Client Lounge

Viewing Room

8X2.7meters

10

-

Plus Four Market Research Limited Services and Expertise

Explore market research solutions, industries, markets, and business issues covered by Plus Four Market Research Limited

INFO

Brook House, 35a South Park Road

Wimbledon

Wimbledon

London,
United Kingdom

SW19 8RR

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Cara Allan

Managing Director

+4420-8254-4444

Cara Allan

Associate Director

+4420-8254-4444

Paula Perez

Manager, The Qualitative Lab

+4420-8254-4444

Kevin Topson

Manager, The Analysis Solution

+4420-8254-4444

Chris Melotte

Field Manager, The Field Division

+4420-8254-4444