When a website handles live transactions, staff workflows, or customer accounts, the people responsible for it ask harder questions before bringing in external support. The scrutiny is reasonable.
This is what procurement teams and IT managers typically check, and what it means in practice when you are looking for specialist ExpressionEngine or Craft CMS support.
Any supplier who handles data related to your users, whether that is contact forms, account details, or order history, needs to be registered with the Information Commissioner's Office. This is a legal requirement under UK data protection law, and it is one of the first things a procurement team will verify.
Expression 37 is registered under ICO reference ZB406232. You can verify this directly on the ICO website.
Enterprise supplier onboarding almost always includes an insurance check. The two that matter for a CMS supplier are professional indemnity (which covers errors and omissions in technical work) and cyber insurance (which covers incidents involving data).
Without these, any claim arising from a mistake or a breach lands with your business rather than the supplier.
Expression 37 is insured through Hiscox. The policy covers professional indemnity to £100,000, cyber and data cover to £100,000, and public liability to £1,000,000. A certificate of insurance is available on request.
For a site that cannot go down, procurement always asks what happens if the person they rely on becomes unavailable.
Expression 37 keeps all client work in Git repositories with detailed developer notes on each codebase. Any developer can pick up the work from those notes without a handover call. A named associate who has worked directly on Expression 37 client sites can step in without a cold handover.
Larger organisations sometimes ask for management accounts or a statement of financial standing before onboarding a supplier, particularly when the contract is long-term or the site is mission-critical.
Management accounts are available on request under a mutual NDA. Expression 37 Ltd has been trading since 2013, incorporated in England and Wales under company number 8762730, with platform specialism going back to 2007.
A portfolio page shows what a supplier has done. References show whether clients stayed. Ask for two or three clients you can speak to directly, not just names on a case study page.
Expression 37 works with clients on long-term retainer arrangements. Several clients have been on continuous support for five or more years. References from long-term ExpressionEngine and Craft CMS clients are available on request.
If you are running a supplier vetting process and need specific documents, certificates, or references, get in touch. Everything above is available, and anything your procurement process requires we can either provide or explain.
To request specific documentation or arrange a reference call, contact Karl directly. Everything listed on this page is ready to share and Karl handles all supplier enquiries personally.
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Most clients come to us when their site has started to feel like a risk rather than an asset. Whether the agency relationship has ended, an upgrade has been delayed, or the site has simply grown beyond what it can handle, a conversation costs nothing.
Get in touch with KarlTrusted by established businesses and growing brands across the UK
Expression 37 works with a small number of clients at any one time. These are some of them.
Karl founded Expression 37 in 2007 and has worked exclusively with ExpressionEngine and Craft CMS ever since. He does not take on work in other platforms and does not hand work to other developers. Expression 37 is deliberately small, because the kind of support that matters to clients with business-critical sites is specific to their site, not something that scales in the conventional sense. If you work with Expression 37, you work with Karl.
Find out how we workUpon completion of the Thornfields Primary Care Trust website, we had no hesitation on asking Expression 37 to help out with some further development updates with our main company website. As with the Thornfields project Karl and his team turned around our requests with flawless speed and efficiency, often adding further advice and guidance on how to best implement the features required. If you are looking for a tried and trusted ExpressionEngine specialist we strongly recommend these guys.
Chris Ibbetson - FPM Group General Manager.
First Practice Management Ltd.