Head of Data

Which; Greater London; Hybrid; GBP 120,000 - 140,000; Full time

Benefits offered by this job

Hybrid working in London

28 days holiday + bank holidays

Pension scheme (6% in year 1; 11% post

Annual Award

Healthcare and private medical

Job summary

Which? is seeking a visionary Head of Data to lead our commercial data strategy, governance, platforms and multidisciplinary data capabilities. You will work across the organisation to ensure data is trusted, accessible and supports our goals.

As part of the Extended Leadership Team, you will shape the data ecosystem and guide investment in AI-enabled capabilities while building high-performing, data-driven teams.

Qualifications

• Proven leadership of multidisciplinary data teams.
• Strong experience in data strategy, governance and architecture.
• Excellent stakeholder management at executive level.

Responsibilities

• Define and execute enterprise data strategy, roadmap and priorities.
• Partner with tech, product and business leaders to align data with goals.
• Establish data ownership, privacy, GDPR compliance and ethics.
• Lead Data Science, Analytics, Data Engineering and Data Products teams.
• Oversee data platform architecture, pipelines and analytics environments.
• Drive data literacy, self-serve analytics and ROI measurement.
• Provide executive leadership and manage budgets and vendors.

Skills

Leadership

Stakeholder management

Communication

Data strategy

Education

Degree in quantitative/tech/business

Tools

Snowflake

Databricks

BigQuery on AWS

Job description

This role offers a competitive salary, hybrid working (London/Hybrid ⅔ days per week in office with Thursday being mandatory), 28 days holiday a year plus Bank Holidays and a fantastic pension scheme offering 6% in year one and 11% after this.

Salary £120,000 - £140,000 base per annum

Please note: Although we acknowledge that the use of AI tools can be helpful, we want your application to represent you. Please ensure your CV and statement of suitability (if asked to send in this advert) reflect your own voice and experiences.

***CLOSING DATE: MONDAY 9TH NOVEMBER 2026 AT 1700 HR***

About The Role

Are you ready to shape how data supports better choices for millions of consumers? Which? is looking for a Head of Data to guide our data strategy and help us use information to create real value. You'll work across the organisation to make sure data is trusted, easy to access, and supports our goals.

Do you enjoy bringing people together to solve complex problems? You'll work with technology, product, marketing and content teams amongst others to help transform the way that Which? helps millions of people get the answer they can trust, every time.

Sitting on our Extended Leadership Team, you'll provide senior leadership across data strategy, management, governance, architecture and reporting. This is your chance to build capability across Which? and create lasting impact. What does success look like? Clear standards, better decisions, and teams who feel confident using data every day.

This is a rare opportunity to shape the future of data within the organisation, influencing strategy at the highest level while building the foundations for an increasingly data-driven and AI-enabled future.

Key Responsibilities Include

• Define and execute the enterprise commercial data strategy, roadmap, operating model, and investment priorities as the organisation transforms into a data-led business.
• Partner with technology, product, and business leaders to align data capabilities with strategic goals and contribute to the overarching AI strategy and governance framework.
• Establish enterprise data ownership, quality standards, privacy/GDPR compliance, ethics, and security in collaboration with legal, compliance, and infosec teams.
• Lead multidisciplinary data functions, including: Data Science, Analytics, Data Engineering, and Data Products, to deliver high-impact models, analytics, and customer experiences.
• Oversee data platform architecture and engineering standards (cloud platforms, pipelines, lakehouses, metadata, and analytics environments) for scalability, security, and performance.
• Drive enterprise-wide data literacy, self-serve analytics adoption, and frameworks to measure ROI and business outcome value across investments.
• Provide executive leadership, manage budgets and key vendor relationships, and build high-performing, cross-functional data teams.

About You

We are looking for an experienced, visionary Head of Data to lead our commercial enterprise data strategy, governance, platforms, and multidisciplinary data capabilities as Which? transforms into a data-led business.

To Succeed In This Role, You Will Bring

• Proven leadership experience driving multidisciplinary data functions (Data Engineering, Data Science, Analytics, and Governance) and shaping enterprise-wide data strategies and operating models.
• Strong technical expertise across modern cloud data platforms (such as Snowflake, Databricks, or BigQuery on AWS), data engineering workflows, and cloud-native AI capabilities.
• Deep knowledge of enterprise data governance, GDPR compliance, data quality frameworks, and responsible AI principles.
• Exceptional senior stakeholder management and communication skills, with the ability to translate complex data and AI concepts for executive and non-technical audiences.
• A degree or equivalent experience in a quantitative, technology, or business discipline (a postgraduate qualification or experience in consumer/digital media environments is desirable).
• For a full list of essential requirements, please refer to the role profile, which can be downloaded as a PDF at the bottom of this advert.

The interview process

• Stage 1: Virtual Meeting with Extended Leadership team colleagues
• Stage 2: In person meeting at our London Office with CPTO & CMO
• Stage 3: Reverse Interview with direct reports

We also have these benefits for you to consider:

• Generous 28 days holiday a year plus bank holidays and the option to buy additional holiday days
• Excellent pension scheme – when you pay in 3%, Which? pays in 6% (rising to 11% after one year of service)
• Annual Award (depending on employee and company performance)
• Healthcare insurance & Private medical insurance and opportunity to participate in