This is
GAIN

Guided by curiosity and critical thinking, we merge insight, intelligence and imagination, to help you grow in ways that matter not just in business, but in the hearts of your audiences.

Since the inception of Sideshow Group in 2010, we’ve been adding to our specialisms, broadening our perspective, and meeting the world where it is, with deep expertise. 

Today as GAIN, we work as a united force, using data to fuel creativity, and technology to unlock new possibilities. As imagineers we don’t just embrace innovation – we engineer it, transforming information into action, and ideas into breakthroughs. 

This is where rebel thinking, smart technology, and data-driven creativity shape the future.

  • North America

    • Suite 1480, 333 Seymour Street
      Vancouver, BC
    CA
  • United Kingdom

    • 2 Valentine Place
      London
      SE1 8QH
    • King William House
      13 Queen Square
      Bristol
      BS1 4NT
    • Avalon
      26-32 Oxford Road
      Bournemouth
      BH8 8EZ
    • Warrior Building 1000
      Lakeside North Harbour
      Western Road, Portsmouth
      PO6 3EN
    UK
  • Spain

    • Planta 6,
      Plaza Doctor Letamendi 1,
      08007 Barcelona
    ES
  • Philippines

    • Manila
    PH
  • India

    • Innov8 Coworking Space,
      Times Square, A Wing, 3rd floor
      Andheri – Kurla Rd, Gamdevi, Marol, Andheri East,
      Mumbai, Maharashtra 400059
    IN
  • Craig Sher

    Group CEO

    Craig co-founded Sionic Advisors in 2014, rapidly building it up into a $100 million premier financial services consulting firm across ten countries. This was done over nine years and through various mergers and acquisitions. It was sold in 2021 to the Davies Group. Before Sionic, he was chairman and managing director of ALaS Consulting. Craig is a chartered certified accountant, and holds a BS in commerce from the University of KwaZulu Natal.

  • Tamsin Ashmore

    CFO

    Tamsin Ashmore is a strategic and forward-thinking CFO with global experience across multiple continents. She has a proven track record of delivering results through acquisitions, mergers, and other significant transactions. As a driven and authentic leader, Tamsin takes a Net Positive approach, focusing on business growth, financial performance, and attracting top talent.

  • Chris Pitt

    CEO Performance

    Chris is the CEO of GAIN Performance. He leads our Performance marketing teams to execute and deliver precision targeted campaigns that increase online visibility, maximise reach and drive growth.

  • Neil Dennis

    CEO Creative Studios & Experience

    Neil is CEO of GAIN Creative Studios & Experience, leading a team of strategists, designers, researchers, creatives and technologists focused on building brands and digital experiences that move people, businesses and markets forward. With over 20 years’ experience across brand, digital and customer experience, he brings a sharp commercial lens to solving complex challenges and driving growth.

  • Rob Van Rooyen

    CEO of Customer Science

    Rob van Rooyen is an internationally experienced strategic leader with 25 years in the communications industry. He has a proven track record of success, having helped multiple clients achieve number-one market positions, earned numerous effectiveness awards, and co-founded several successful businesses. A true hybrid of IQ, EQ, and Street-Q, Rob’s approach to finding solutions that create real impact consistently sets him apart.

  • Abdul Hamid Ebrahim

    CDO

    As Chief Digital Officer at GAIN, Abdul Hamid leverages deep CX and martech expertise, drawing on experience with leading technology providers such as Oracle and Genesys, as well as client-side roles. He drives digital innovation, delivering integrated, client-focused solutions that create measurable value and lasting impact.

  • Anna Catherall

    Operations Director

    As Group Operations Director, Anna keeps everything running smoothly behind the scenes. She has over 20 years’ experience in financial and operational management positions in both digital marketing and financial services. She’s focused on collaboration, clear communication, and is constantly striving to get things done faster, smarter, and better.

  • Gareth Hughes

    CTO

    Gareth Hughes is an Experienced Technical Director with demonstrated success of working in the marketing and advertising industry. Skilled in data architecture and analysis, information security, requirements analysis, e-commerce, agile methodologies, and customer relationship management.

  • Tanvi Amin

    General Counsel

    Tanvi is a seasoned lawyer whose extensive portfolio across industry sectors reflects a robust blend of private practice and in-house leadership roles at premier global law firms and corporations. With her strategic and operational international legal experience spanning nearly three decades, she shapes GAIN’s core legal strategy while driving regulatory alignment and effective risk management across GAIN’s operations worldwide, ensuring resilience and adaptability in today’s complex global business environment. She is UK- and US-qualified, holds a BA (Hons) and MA (Oxon) in Jurisprudence (Law) from the University of Oxford, and is also admitted to the New York Bar.

UNITED KINGDOM. SPAIN. NORTH AMERICA. PHILIPPINES. INDIA


Data powers what we think today. Creativity shapes what we do tomorrow.

Craig Sher, GAIN CEO