A focused, UK-based technical practice.
BlackTor Group Ltd is a UK-based technical practice specialising in Excel, VBA, XML, SQL, Python and data analytics. The work is held to one standard throughout: documented, tested, and built to survive a year of real use, not just a demo.
One practice, six disciplines, one standard.
BlackTor Group Ltd is run by Jay Knox-Crichton (KC), a UK-based developer working across Excel, VBA, XML, SQL and Python, together with the data-analytics work that connects them. The same standard applies to every discipline: work that can be handed to someone else, reopened a year later, or scaled to ten times the data it was built for, without breaking down.
Each discipline has its own page, updated as work is delivered: Excel Formulae, XML, VBA, SQL, Python and Data Analytics, the discipline that brings the other five together.
No client names, no client data.
Everything BlackTor builds is covered by non-disclosure agreements, so nothing on this site describes a real client, project or dataset. The techniques shown throughout are real: the problems they solve are drawn from personal projects, or invented outright, chosen to demonstrate an approach rather than reveal anyone's business.