Cookies & tracking

Cookies and tracking technologies.

This notice explains how the C3 website uses cookies, scripts, tracking pixels and similar technologies, including Lead Forensics, and the choices available to you.

Last updated: November 2026
In summary C3 uses Lead Forensics by default to help us understand which organisations visit our website and how they engage with it. Lead Forensics uses a script and related tracking technology to collect technical and website-usage information and to attempt to match a visit to a business. You can opt out at any time using . Standard server logs may also be created by our hosting environment.

1. Cookies and similar technologies

Cookies are small text files that websites can store on your device. Websites can also use other technologies, including JavaScript tags, tracking pixels, local storage and similar techniques, to store information on a device or access information made available by it.

These technologies can be used for functions such as remembering preferences, maintaining a session, measuring website use or understanding how visitors interact with a website.

2. Technologies used by this website

Necessary website technology

The website may use limited technology that is necessary to operate correctly, maintain security or remember a privacy choice. Where this is strictly necessary for the service you request, it may be used without consent.

Business visitor identification

We use Lead Forensics as a business visitor identification service. It is enabled by default unless you have previously opted out in this browser. It is described in more detail below.

We do not use the website to serve personalised advertising or to track visitors across unrelated websites for advertising purposes.

3. Lead Forensics

C3 uses Lead Forensics, a B2B website visitor identification service. Its purpose is to help us understand which businesses may be visiting the C3 website and which pages or areas of the site appear to be of interest.

When the tracking code loads, Lead Forensics may receive information associated with a website visit such as the IP address, pages viewed, date and time of the visit, referring page, browser and device information, screen information and other standard technical request data. Lead Forensics attempts to match the IP address to a business in its business database. Where a match is made, C3 may see business-level information and website activity in the Lead Forensics service.

The core Lead Forensics service is designed to identify organisations, rather than the named individual who visited the website. A business match may be supplemented with firmographic information about the organisation from Lead Forensics' business data.

Lead Forensics cookie

Lead Forensics states that its core tracking code does not require its optional cookie. Lead Forensics can also offer an optional first-party cookie called Ifuuid, which uses a random identifier and may persist for up to one year. Whether this cookie is used depends on the Lead Forensics configuration in operation. We keep this notice under review to reflect the configuration in use.

4. Your browser and privacy choices

Lead Forensics is enabled by default when you visit the C3 website. You can opt out at any time using . If you opt out, the website stores that preference and reloads so that Lead Forensics is not loaded on the new page view or later page views in that browser.

An opt-out cannot undo information already sent before you changed the setting. Browser privacy, content-blocking and script-blocking controls may also allow you to restrict website technologies.

If you have a question or objection relating to C3's use of Lead Forensics, you can contact us at Privacy@c3.co.uk.

5. Standard server logs

Like most websites, the systems used to host and deliver the C3 website may automatically create standard server logs when a page or file is requested.

These logs may include information such as your IP address, the date and time of the request, the page or file requested, browser or device information, the referring page and whether the request was completed successfully.

This information is used where necessary to operate, maintain and protect the website, investigate technical problems and help prevent misuse or security incidents. Standard server logs are separate from our use of Lead Forensics.

Where server log information contains personal data, further information about how C3 handles it is set out in our Privacy Notice.

6. Changes to this notice

We may update this Cookies and Tracking Technologies notice if the website, Lead Forensics configuration or other technologies we use change.

The date at the top of this page shows when this notice was most recently updated.

7. How to contact us

If you have questions about this notice or the tracking technologies used by the C3 website, please contact:

C3
Stirling House
Denney End Road
Waterbeach, Cambridge
England
CB25 9PB
Email: Privacy@c3.co.uk
Telephone: +44 (0)1223 427700