Cookie Policy
Last updated 23 September 2026
Introduction
This policy explains what cookies this website uses, what they do, and how you control them. Please read it so you know what we do with your information.
We may update this cookie policy from time to time and will post any changes here, so it’s a good idea to come back occasionally and read through it again.
What are cookies?
Cookies are small files of letters and numbers. These files are either stored in the memory of your computer or other device such as a mobile phone or tablet (generally known as session cookies) or are placed on the hard drive of your device (generally known as persistent cookies).
Cookies are created when you visit a website or other service that uses cookies. They are commonly used to help the user’s browsing experience and to provide more information about the user’s experience and interests. For more details about cookies, and how to delete and disable them, you can visit www.aboutcookies.org and see our section on turning cookies off below.
How do we use cookies?
This website uses one kind of cookie only: analytics cookies, which tell us how the site is used so we can improve it. We do not use cookies for advertising, and we do not sell or share what they collect.
Analytics cookies are not set when you arrive. They are set only if you agree to them. Until you do, the site works normally and stores nothing on your device. You can change your mind at any time, and nothing on this website stops working if you refuse.
Nothing you send us through the enquiry form depends on cookies. That is covered separately in our privacy policy.
What cookies are on our website?
If you agree to analytics, Google Analytics 4 sets two cookies:
| Cookie | What it does | How long it lasts |
|---|---|---|
_ga | Tells one visitor's browser apart from another's, so a returning visit is not counted twice. | 2 years |
_ga_<id> | Keeps track of the current visit, so a set of pages read in one sitting is counted as one visit. | 2 years |
Analytics
Analytics cookies let us count visitors, see which pages are read and which are not, and work out where people are looking for something they cannot find. We use them to decide what to improve. They do not tell us who you are.
We use Google Analytics 4, provided by Google. Google processes this data on our behalf under our instructions. Google Analytics 4 does not record or store your full IP address, and we have not enabled any advertising features. You can also block Google Analytics in any browser with Google's opt-out add-on.
How do I change my mind or delete them?
You can withdraw your agreement at any time and the analytics cookies will stop being set. To remove ones already stored, delete them in your browser.
Find out more about cookies, including how to disable, enable and delete them, at www.aboutcookies.org. You can block most cookies by activating the setting on your browser that allows you to refuse the setting of all or some cookies. However, if you use your browser settings to block all cookies you may not be able to access all or parts of our site, or you may experience reduced functionality.