Castellum is an award winning prime construction company offering both a turnkey Design and Build solution and outstanding levels of service as a Main Contractor.

Castellum build exceptional homes in London and the South Western Home Counties for discerning clients, architects, and consultants. They also develop and sell our own projects.

Brand Colors
The brand colours and design were Castellum’s current branding of which we adopted into the whole look and feel of the website.



Heavy Metal



Website design and build
Cumulus Digital were instructed to redesign their old website as it was no longer suited for modern devices and required a refresh.

The key focus was around the portfolio of the magnificent projects they had completed in both London & Surrey as well as the Cotswolds.

Due to various PR material being published, Cumulus Digital turned the whole project around within 2 weeks.

Working with Ed Laycock and the team at Cumulus Digital Ltd to build our new website has been incredibly easy. They have provided a service that is second to none, in my experience. It has been fun (which is not a word I thought I would use to describe building, writing and designing a website) and I have been incredibly impressed by their knowledge, expertise and the speed at which they have turned this around for us. Our new website has been well received universally and I would not hesitate to recommend them to anyone wanting a new site. These guys know what they are doing and they do it well. Kudos to Cumulus Digital Ltd.

Our Case Studies

We are specialists in both economics and information technologies and we apply our full range of talent to creating the perfect solution for each client’s needs.