The details that matter when building for the UK.
Practical guides to UK company data, payments, ecommerce and software compliance, based on official sources and our development work.
- 3
- topics
- 19
- guides & tools
- UK
- market-specific
- real
- delivery evidence
Browse guides and tools by topic
Start where the operational risk sits: resolving a UK entity, moving money and goods, or keeping a product supportable and compliant. Each cluster joins source-backed guidance to practical implementation.
UK company data and identity
Practical guidance for UK company, charity, postcode and identity data: what each source proves, what it does not, and how to integrate it safely.
Open the cluster →10 guides & toolsUK payments and ecommerce
Architecture and operations for UK payments, ecommerce, tax, shipping and cross-border sales, grounded in production implementation choices.
Open the cluster →6 guides & toolsUK product engineering and compliance
UK-focused guidance on hosting, GDPR, accessibility, performance, migrations, operational resilience and agency delivery.
Open the cluster →How to use these guides
- 01What exact business decision must the system make?
- 02Which primary source supports each factual assumption?
- 03What happens when the API, supplier or user input is wrong or unavailable?
- 04What evidence, ownership and recovery path remain after launch?
UK guides and tools
Direct answers near the top, detailed boundaries underneath, and code or architecture you can take into a product discussion.
Companies House identity verification deadline calculator
Check director and PSC verification windows using a company lookup or manually entered details.
Use the tool →Address dataPostcodes.io vs Ideal Postcodes for UK address lookup
Choose postcode geography or complete delivery-point addresses with a practical scoring model and Next.js integration pattern.
Read the guide →Company dataUsing the Companies House API for UK onboarding and KYC
Resolve the legal entity, understand the KYC boundary and synchronise registry data without damaging customer-confirmed records.
Read the guide →Free toolUK late payment interest calculator
Calculate statutory interest and fixed compensation for an overdue business invoice and prepare a draft payment request.
Use the tool →Free toolEU charger label generator
Prepare draft charging labels and charger-inclusion pictograms for covered products sold into the EU.
Use the tool →Cross-borderSelling from the UK to the EU: ecommerce requirements
Route GB, Northern Ireland and EU-stock orders through the right VAT, customs, origin, product and fulfilment evidence.
Read the guide →Technical and operational guidance only. Legal, tax, financial and compliance decisions need appropriately qualified professional advice.
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