Cookie policy

The short version

We use the minimum number of cookies to keep the site working and to understand, anonymously, which pages people read. We don't use advertising cookies. You can change your preferences at any time using the Cookie preferences link in the footer.

What is a cookie?

A cookie is a small text file your browser stores on your device when you visit a website. Modern websites also use related technologies such as local storage. We refer to all of these as "cookies" for simplicity.

Cookies we use

Strictly necessary

These are required for the website to function and cannot be switched off.

• PHPSESSID — session identifier used to protect the trial form against cross-site request forgery. Expires when you close the browser.
• sf_consent — remembers which cookie categories you've accepted or declined. Expires after twelve months.

Analytics (optional)

If you accept analytics in the cookie banner, we use Plausible Analytics, a privacy-friendly tool that doesn't read your IP address in full and doesn't follow you across sites.

• plausible — anonymised page-view counter. Aggregated statistics only.

What we do not use

No advertising cookies. No third-party trackers. No social-media pixels. No cross-site identifiers.

Changing your preferences

Click the Cookie preferences link in the footer of any page to change your settings. You can also clear cookies from your browser settings (browser help pages explain how). Clearing cookies will reset your preferences and you may see the banner again.

If something is unclear

Email [email protected] with any questions about our cookie practice. We treat cookie questions as part of the privacy policy and aim to reply within twenty-one days.