Cookie Policy

What cookies this site uses.

Essential cookies

None are currently required for core site or calculator functionality — calculators run entirely client-side without cookies.

Analytics cookies

If analytics cookies are enabled in future, they will be listed here by name and purpose, with information on how to opt out, before being switched on.

Advertising cookies

If advertising is enabled in future (e.g. via Google AdSense), this section will be updated to describe the specific cookies used and link to relevant opt-out tools, in line with UK PECR/GDPR requirements.