Custom digital solutions for unique business needs

When off-the-shelf solutions don't match your business needs, we step in to provide streamlined bespoke solutions

More Services

Software Development

We design and build bespoke applications and e-commerce systems that can make a real difference to businesses.

Website Performance

Our goal is to help your website perform at its best - ensuring it drives meaningful results for your business.

Data Services

We provide business owners and decision-makers the insights they need to make informed, strategic decisions.

Cruise Management Solutions

We have built and managed core business technology in the cruise industry for over a decade

Our Work

We deploy technology for clients to increase efficiency, fuel growth, increase sales and profits. We do this over the long term, by building lasting partnerships with our clients.

Ambassador is a UK-based cruise operator offering a diverse calendar of over 120 sailings annually to destinations around the globe.

Collaborated for 3 yearsBespoke cruise management systemUX & conversion focusedBespoke booking engine

Mabey Hire is a leading supplier of temporary modular bridging, construction equipment, and engineering services.

Collaborated for 3 yearsBespoke inventory management systemCustom delivery management solutionBusiness logic & process automation

Simply Wigs are the UK's leading online retainer of human hair wigs, hairpieces and wig accessories.

Collaborated for 6 yearsBespoke e-commerce & order managementBusiness logic & process automationUX & conversion focused

Intertrain, part of the City & Guilds group, is the UK's leading provider of railway specific training.

Collaborated for 12 yearsBespoke training management systemBusiness logic & process automation

CH Power Tools are a leading provider of tool repair, testing, servicing, and inventory management.

Collaborated for 12 yearsBespoke inventory management systemBusiness logic & process automation

Mystudenthalls.com is the UK's leading search engine for student accommodation.

Collaborated for 11 yearsBespoke student accommodation search engineUX & conversion focused

Rejuvenated is a wellness and beauty brand offering natural supplements and skincare products aimed at enhancing health and vitality.

Collaborated for 4 yearsBespoke subscription & e-commerceUX & conversion focused

How we work

Everything we do is backed up by our guiding principles

Read our principles

Castus Blog

Sometimes we write about the questions we are asked, and the work we do - Here are our latest writings.

View all

New EU Accessibility Law Coming into Effect June 28, 2025 - What E-commerce Businesses Need to Know

Starting June 28, 2025, a new EU law - the European Accessibility Act (EAA) - will require many e-commerce businesses to ensure their digital products and services are accessible to people with disabilities

Usability

Complete Castus Glossary of Web Design Terminology (For Beginners)

Terms, technologies, ideas and concepts that you should know about

Web Development

Slow websites: Does website speed matter, what are the causes, and fixes?

How important is website performance, and what is it really made up of?

Usability

View all