The partner has fulfilled the certification criteria and maintains the requisite number of Umbraco certified developers within their organization.
Certification requirements:
- Platinum: At least 1 active Certified Master OR 2 active Certified Experts
- Gold: At least 1 active Certified Expert
- Silver: At least 1 active Certified Professional
Cantarus
We create extraordinary digital experiences
Digital with purpose. Experience that matters.
Sector
- Healthcare
- Arts & culture
- Public sector & charity
- Education
- Associations & Membership
Skills
- Cloud-Native
- Design Systems
- Enterprise Integration
- Legacy Modernization
- WCAG Accessibility
Awards & Contributions
Contributing Platinum Partner 2022
This badge recognizes partners who go beyond the requirements for becoming a partner by actively giving back to the Umbraco project. To earn this status, partners must contribute "agency time" toward the community through activities like core pull requests, package development, event organizing, or creating open-source documentation.
Contributing Platinum Partner 2024
This badge recognizes partners who go beyond the requirements for becoming a partner by actively giving back to the Umbraco project. To earn this status, partners must contribute "agency time" toward the community through activities like core pull requests, package development, event organizing, or creating open-source documentation.
Contributing Platinum Partner 2025
This badge recognizes partners who go beyond the requirements for becoming a partner by actively giving back to the Umbraco project. To earn this status, partners must contribute "agency time" toward the community through activities like core pull requests, package development, event organizing, or creating open-source documentation.
About Cantarus
We’re Cantarus—an independent, full-service digital agency that partners with ambitious brands and influential organisations to craft extraordinary digital experiences. Headquartered in Manchester, with additional offices in London, Washington, and Moldova, our growing team of 75+ digital specialists (featuring 2 Umbraco MVPs) is structured to invest in long-term client success. We’re proud to maintain an industry-leading Net Promoter Score of +75 and 95% client retention rate, a reflection of our focus on delivering outstanding results and lasting relationships.
Building Websites and Integrated Digital Ecosystems for Membership Organisations
With over two decades of experience and hundreds of successful digital projects delivered, Cantarus is the trusted long-term partner for some of the most influential membership organisations, associations, charities, and global institutes. We’re proud to support some of the UK’s largest membership bodies—including the likes of the Chartered Institute of Marketing, British Medical Association, and the Royal Institute of British Architects—helping them to deliver truly exceptional membership experiences through connected, engaging, and scalable digital ecosystems built on Umbraco.
Visit website
Why Work With Cantarus?
Cantarus is proud to be a Contributing Umbraco Platinum Partner in both the UK and USA and the official host of the Umbraco Roadshow in the North West. We’re actively involved in shaping the future of the platform through our participation in the Umbraco Orchestration, Sustainability, and Cloud Councils.
With ISO 27001 and ISO 9001 accreditations, we combine robust security with consistently high-quality delivery. These standards underpin every project, ensuring your digital platform is built on secure processes, reliable governance, and a commitment to excellence.
Services & Skills
We combine strategic consultancy, technical delivery, and creative excellence to deliver scalable, user-focused solutions.
Our Services:
Umbraco website design and development
Mobile app development for membership/associations
Digital publications (via web and/or mobile)
Online community platforms
Experience design and branding
Hosting, support and optimisation
Analytics, insight and personalisation
Strategic digital and AI consultancy
Content marketing
We work with clients across the UK, Europe, North America, and across the world—tailoring every solution to your organisation’s goals and user needs.
The Loom with Cantarus
The Loom with Cantarus is our quarterly thought leadership podcast and live conversation series, created to explore how organisations can innovate with confidence in an increasingly complex digital landscape.
In our inaugural episode, our CEO, Lee Adams, was joined by Mats Persson, CEO of Umbraco, to discuss leadership, innovation, governance, and the challenge of making confident decisions when technology is evolving faster than certainty.
Watch the conversation here
Awards and contributions
We’ve been recognised across the industry for our innovation, creativity, and outcomes-focused work. You can dig deeper into our expertise by visiting the case studies section of our website.
Communicator Awards 2026
Excellence Winnner - RIBA, Best Website and Design (Associations)
Distinction Winner - CIM, Best Website (Associations)
Umbraco Awards 2025
Nominee - British Army, Best Website Design
Communicator Awards 2025
Excellence Winner - British Army, Best Website (Government)
Distinction Winner - Royal College of Physicians, Best Website (Associations)
Cases by Cantarus
Soldier Magazine
The British Army partnered with Cantarus to bring Soldier Magazine online for the first time using Umbraco CMS. The result is a bold digital platform that modernises 80 years of military storytelling for today’s mobile-first audie…
International Society of Aesthetic Plastic Surgery (ISAPS)
ISAPS partnered with Cantarus to transform its global digital presence with Umbraco CMS creating an award-winning platform that enhances mobile engagement, simplifies member journeys, and delivers a bold, future-ready experience.
Youth Sport Trust
Youth Sport Trust partnered with Cantarus to launch an award-winning Umbraco site with bold, accessible design. The new platform boosts engagement and supports YST’s mission to improve child wellbeing.
BIMCO
BIMCO partnered with Cantarus to deliver a scalable, user-first platform on Umbraco CMS. The new site improves usability, accessibility, and engagement, supporting BIMCO’s long-term digital strategy.
British Army
The British Army partnered with Cantarus to deliver an engaging, accessible, and scalable website that enhances recruitment, public engagement, and information-sharing while setting a new standard for online interaction.
Chartered Institution of Building Services Engineers (CIBSE)
CIBSE partnered with Cantarus to transform its digital presence using Umbraco, creating a faster, more accessible platform with deep integrations, improved content discovery, and tools that support members and industry leadership.
Royal College of Physicians
The Royal College of Physicians partnered with Cantarus to modernise their digital presence resulting in a high-performance, accessible, and user-centric website.
Chartered Institute of Marketing (CIM)
As the world’s leading professional body for marketers, CIM set out to lead by example with a digital experience built on the Umbraco CMS that reflected the same standards of excellence it promotes across the profession.
Trade Association Forum
Trade Association Forum's new platform better reflects TAF’s mission, clarifies its offering, and provides a cleaner, more intuitive digital experience that supports its role as the leading body for UK trade associations.
FGS UK
Cantarus supported FGS UK in delivering a complex, multi-region digital project through embedded development and 24/7 technical support. The team improved release processes, contributed to infrastructure improvements, and supporte…
Royal Institute of British Architects (RIBA)
RIBA partnered with Cantarus to deliver the first phase of the digital strand of its House of Architecture programme, consolidating its fragmented digital estate to improve usability, accessibility and internal efficiency. Through…
RIBAJ
Cantarus helped RIBA modernise RIBAJ by replatforming the publication onto Umbraco Cloud as part of its wider digital transformation programme. The new platform introduced unified authentication, improved cross-site discoverabilit…
