Plus Four Research Limited

Plus Four Market Research – Your U.K. Research Partner

Plus Four Market Research is an independent, U.K.-based, full-service qualitative and quantitative market research agency. Established in 1970, we have delivered more than 23,000 research projects, helping international research agencies, brands and organisations understand their markets, customers and consumers.

Full-Service Qualitative Research in the U.K.

We specialise in providing U.S. and international research agencies with a reliable, experienced U.K. research partner. Whether you need a complete qualitative research project or U.K. delivery within a multi-country study, our senior researchers provide hands-on support from initial research design through fieldwork, moderation, analysis and reporting.

Our qualitative expertise includes focus groups, in-depth interviews (IDIs), online qualitative research, workshops, concept testing, product testing, taste testing and central location tests (CLTs).

We combine experienced qualitative researchers with an established nationwide fieldwork network, enabling us to manage projects across the U.K. while maintaining consistent standards of recruitment, moderation and research quality.

Experienced Researchers, Personal Service

As an independent agency, we offer the flexibility, responsiveness and personal attention that international projects demand.

Every project benefits from senior researcher involvement and a dedicated point of contact. Our team works collaboratively with clients to understand their objectives, recommend appropriate methodologies and deliver meaningful findings.

With more than five decades of research experience, we understand the practical requirements of delivering U.K. research for overseas clients, from participant recruitment and scheduling to cultural considerations, client observation and reporting.

Quantitative Research and Flexible Support

Alongside our qualitative specialism, Plus Four provides full-service quantitative research, including questionnaire design, data collection, processing, tabulation and analysis.

For agencies with established research teams, we also offer individual services such as U.K. participant recruitment, fieldwork, moderation and analysis. These can be commissioned separately or combined to support a wider research programme.

Our nationwide network of more than 700 experienced supervisors, interviewers and recruiters provides coverage throughout the U.K. for consumer and B2B research.

The Qualitative Lab – Our London Viewing Facility

Plus Four operates The Qualitative Lab, a dedicated qualitative research viewing facility in Wimbledon, South West London.

The facility provides a professional environment for focus groups, in-depth interviews, workshops, product testing and client meetings. Experienced hosting, audio/video recording and live streaming enable clients to observe research either in person or remotely.

The Qualitative Lab can be hired independently or incorporated into a full-service research project, offering international agencies the convenience of combining U.K. research expertise and a professional London facility through one supplier.

Visit www.thequalitativelab.co.uk for further information.

U.K. Expertise, European Reach

Based in London, Plus Four conducts research nationwide across the U.K. and coordinates projects across European markets.

We regularly work with international research partners and understand the importance of clear communication, reliable project management, consistent research standards and timely delivery.

Whether you are a U.S. agency commissioning U.K. qualitative research, coordinating a European study or seeking a trusted partner for consumer or B2B insights, Plus Four offers the experience, expertise and flexibility to deliver.

Contact Plus Four Market Research to discuss your next U.K. or European research project.