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  • 4.8 / 5.0 (1249)
    8+ References
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    15+ References
  • 4.8 / 5.0 (980)
    11+ References

Sigma Testimonials

  • "It was a privilege to be asked to independently test the Green Engage system's usability. With a System Usability Score of 96.6, that is the highest score we have seen to date."

  • "Sigma has created an image library to present our resources in an easy to use interface, with a significantly improved User Experience. The collaborative approach throughout the project allowed us to have our input into the final product, whilst using their skills and experience to deliver an excellent end result. …

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  • Barques
    Reference Rating
    4.8 / 5.0
    Customer References 8 total
    About

    Barques is a Birmingham based, full-service agency with an established team of creative types. They deliver the very best in design, marketing & communications. Barques have been steadily and successfully …

  • Carat
    Reference Rating
    4.8 / 5.0
    Customer References 15 total
    About

    Carat is the most progressive media agency network in the world and the world’s first media agency. They are part of Dentsu Aegis Network. Together they are 40,000 people in …

  • Crelix
    Reference Rating
    4.8 / 5.0
    Customer References 11 total
    About

    Crelix Marketing Partners is a national public relations firm and marketing agency serving the real estate, finance, information, technology and energy/environment sectors. They team’s knowledge and appreciation of commercial real …

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