Expression 37 has worked exclusively with ExpressionEngine and Craft CMS since 2007. In that time the practice has delivered more than 200 projects for over 80 clients across the UK, from version upgrades and emergency rescues to long-term retainer support and third-party integrations. Every piece of work is handled personally by Karl, with no account managers or junior developers between you and the person actually doing it.
That focus on a single platform specialism was a deliberate choice. A developer who works exclusively on ExpressionEngine and Craft CMS builds a depth of knowledge that a generalist agency, moving between platforms from project to project, simply cannot match. When something breaks at an awkward moment, or an upgrade uncovers a problem buried in years of accumulated code, that difference matters.
Why Expression 37
Most clients arrive because their situation has changed. The agency that built the site has moved away from ExpressionEngine or Craft. The developer who knew the system has left. A compliance deadline has appeared, or a payment gateway has sent notice of closure. Sometimes the site has already lost the ability to take payments once, and the next failure is a question of when rather than if.
In each case the same thing is missing: a specialist who knows the platform, understands what the business depends on, and can act without needing weeks of onboarding. Expression 37 exists for exactly that situation. The work is not always glamorous, but when a site that handles live payments or underpins business operations comes back from the edge, the value to the client is real and immediate.
What We Do
The work covers ExpressionEngine and Craft CMS maintenance, support, and version upgrades, taking over from a previous developer or agency, third-party integrations including Stripe, Salesforce, and HubSpot, legacy PHP application maintenance, and hosting migrations. For larger development projects, additional hands are brought in when needed, but the relationship, the accountability, and the technical direction remain with Karl throughout.
Who We Work With
Expression 37 works directly with business owners and in-house teams whose ExpressionEngine or Craft CMS website is central to how they operate. The clients we work with come from across sectors, retail, professional services, public sector, finance, and others. What they have in common is a site they cannot afford to leave unsupported.
Based in West Yorkshire, working with clients across the UK.
