Legal
Cookie policy
Last updated 20 October 2026
Cookies are small files a website stores on your device. We only use the ones needed to run this site unless you choose to allow analytics or marketing cookies.
Your choice
When you first visit we ask whether you accept analytics and marketing cookies. Rejecting them is as easy as accepting them, and nothing optional is set before you choose. You can change your mind at any time.
Cookies we use
| Name | Provider | Purpose | Expires | Category |
|---|---|---|---|---|
| bes-consent | This site (local storage) | Remembers your cookie choice | 6 months | Strictly necessary |
| theme | This site (local storage) | Remembers light or dark mode | Until cleared | Strictly necessary |
| sb-* | Supabase | Keeps staff signed in to the admin area (staff only) | Session / 1 week | Strictly necessary |
| _ga | Google Analytics | Distinguishes visitors to count visits | 2 years | Analytics |
| _ga_R7KR85WH8S | Google Analytics | Keeps track of the current visit | 2 years | Analytics |
| _gcl_au | Google Ads | Links a quote request to the advert that brought you here | 90 days | Marketing |
| _gcl_aw, _gac_* | Google Ads | Stores the advert click identifier | 90 days | Marketing |
Google Consent Mode
We use Google Consent Mode. If you reject analytics and marketing cookies, the Google tag is not loaded at all. If you accept, Google receives the data described in its partner sites policy.
Embedded content
Links to WhatsApp or Google Maps take you to those services, which apply their own cookie policies. The 3D project simulations load their graphics library from the jsDelivr content network, which does not set cookies.
More information
See our privacy policy for how we handle personal data, or visit ico.org.uk to learn more about cookies and how to manage them in your browser.