Cookie Policy
Last updated: 2026-09-15
Cookies are small text files that a website stores in your browser. We use them to keep the site working correctly and — only with your consent — to understand how it is used and to measure advertising performance.
Cookie categories
We group cookies into three categories. Only the first is active by default; the other two load exclusively after you agree.
Strictly necessary
Provide core functions: navigation, remembering your language, security and form submission. The site cannot work without them, so they cannot be switched off.
| Name | Provider | Purpose | Retention |
|---|---|---|---|
| rotte_consent | rottegroup.md | Stores your cookie choice so you are not asked again on every visit. | 180 days |
| NEXT_LOCALE | rottegroup.md | Remembers the selected interface language. | 1 year |
| payload-token | rottegroup.md | Authentication session — site administrators only. | Session / 7 days |
Analytics
Show us, in aggregate, how the site is used: which pages are visited, where visitors come from and where they run into trouble.
| Name | Provider | Purpose | Retention |
|---|---|---|---|
| _ga, _ga_* | Google (Google Analytics 4) | Anonymous browser identifier used to distinguish visitors and measure sessions. | 2 years |
| _gid | Google (Google Analytics) | Distinguishes visitors within a single day. | 24 hours |
| _gat | Google (Google Analytics) | Throttles the request rate sent to Google Analytics. | 1 minute |
| _clck, _clsk, CLID | Microsoft Clarity | Aggregated behaviour analytics: heatmaps and anonymised session replay used to find usability problems. | 1 year / session |
Marketing
Allow advertising performance to be measured and relevant ads to be shown on other platforms.
| Name | Provider | Purpose | Retention |
|---|---|---|---|
| _gcl_au, _gcl_aw, _gcl_dc | Google (Google Ads) | Attributes conversions to advertising campaigns (which ad led to an enquiry). | 90 days |
| _gac_* | Google (Google Ads) | Links campaign data to the Google Analytics session. | 90 days |
| _fbp, _fbc | Meta (Facebook Pixel) | Browser and click identifiers used for campaign measurement and remarketing across Meta platforms. | 90 days |
Managing your choice
You can change your choice at any time with the button below. Withdrawing consent stops the relevant tools immediately and deletes the cookies they have already created.