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A Global Foresight Consultancy

We accelerate growth for ambitious brands

We are a global marketing effectiveness and foresight consultancy with expertise in data, advanced analytics, and technology. We empower smarter, data-informed marketing investments.

Gain Theory named a Leader in The Forrester Wave™:

Marketing Measurement and Optimization, Q3 2023.

$

21

bn

in client value generated

50

years of experience

910

client recommendation score

We work with ambitious brands

What we think

Advertising and media  | 20 August 2024

It’s time to re-evaluate how we measure creative effectiveness

Data and analytics | 22 July 2024

How advanced marketing measurement can drive revenue growth

Arrow lights leading to an end point

Measurement strategy  | 20 May 2024

Defining success is one of the most important but overlooked ways to improve your marketing effectiveness strategy

Two women employees

Data and analytics | 14 May 2024

How to make data-informed decision-making more rewarding for your organization

Granular geographic data

Advertising and media  | 12 February 2024

How granular geographic data delivers privacy-compliant insights and improves effectiveness

Accelerating growth with marketing effectiveness

Data and analytics | 26 January 2024

Unlock growth in 2024 with a new marketing effectiveness framework

Want to know what our industry-leading experts have to say?

Using our award-winning solutions, you can:

Focus on measuring what matters

Increase speed and quality of insights

Create value over the short and long term

Interested in our
award-winning solutions?

Start exploring

Meet our people

Meet our people

Rachel Brook

Global Client Growth Leader

Rachel discusses the rise of retail media and other emerging trends, how marketing effectiveness helps with business challenges, and why Dark Matter is a must-watch.

Download our exclusive new report