Privacy

The short version: this site collects an email address if you choose to give one, records what you typed into a calculator only if you ask for the result by email, and uses cookieless analytics. Google Analytics also runs, but only if you agree to it.

Who is responsible

Leithen Lane is the data controller. For anything on this page, including any request under the rights below, email sam@leithenlane.com or use the contact form.

What is collected

If you use a calculator

The calculators run entirely in your browser. The numbers you type are not sent anywhere and nobody sees them, unless you ask for the result by email.

If you do ask for the result, we receive your email address along with the figures the calculator produced, so the email we send can contain your actual numbers rather than a generic template.

If you join the mailing list

We store your email address, the page you signed up from, and which tool or resource prompted it. That is used to make what we send you relevant rather than generic.

We use double opt-in, so nothing is sent until you confirm your address by clicking a link. Every email includes an unsubscribe link, and unsubscribing removes you immediately.

Analytics

Two things, and they behave differently.

Vercel Web Analytics runs on every visit. It is cookieless, collects no personal data, and does not track you across sites. It records that a page was viewed and that a calculator was used. It cannot tell who did it. Nothing here needs your permission, which is why the tools work without you agreeing to anything first.

Google Analytics runs only if you agree to it. It sets cookies in your browser and sends data to Google, so nothing is requested from Google and no cookie is set until you choose "That is fine" on the banner. Choose "No thanks" and the Google script is never loaded at all. Your choice is remembered in your browser, and you can change it by clearing this site's data and reloading.

Google Analytics is used to see which guides and tools are worth writing more of. IP addresses are anonymised. Google acts as a processor for this data, and their own terms apply to what they do with it.

Legal basis

Marketing emails are sent on the basis of your consent, given when you confirm your address. An email containing a calculator result you specifically asked for is sent to fulfil that request.

Who else sees it

Email addresses are stored in Brevo, which handles delivery on our behalf. The site is hosted by Vercel. Neither uses your data for their own purposes.

How long it is kept

Email addresses are kept until you unsubscribe or ask for removal. Calculator figures attached to a contact record are kept alongside it for the same period, and are deleted with it.

Your rights

Under UK GDPR you can ask for a copy of what we hold about you, ask for it to be corrected or deleted, and object to it being used for marketing. Email email sam@leithenlane.com, or use the contact form and choose "A privacy or data request". Either reaches the same place and will be dealt with. You can also complain to the Information Commissioner's Office.