Our process
- Define the decision. Every page starts with something a host needs to decide or do.
- Find the strongest sources. We prefer UK government, recognised safety bodies, standards and direct industry data.
- Show the assumptions. Calculator defaults and adjustment factors are published beside the result.
- Check separately. Automated tests cover formulas, routes and source structure. Human checks of representative outputs, live sources and phone and desktop usability are required before public launch.
- Update visibly. Material changes update the date; cosmetic edits do not.
Use of AI
AI assists with research organisation, drafting, coding and quality checks. It is not treated as a source. Published factual claims must trace to an external source or be clearly labelled as our own planning assumption. Pages should add a working tool, original analysis, a tested example or another form of value beyond summarising search results.
Corrections
If a calculation or factual statement is wrong, we correct it promptly and note material corrections on the affected page. Readers can use the contact page to report a problem.
Food and alcohol
Food quantity outputs are planning estimates, not safety instructions. Always follow storage, cooking, allergen and use-by information from the Food Standards Agency and product labels. Drinks calculators describe stock planning—not a recommended level of alcohol consumption—and always include alcohol-free drinks and water.