Privacy Policy

Last updated: 5 April 2026

1. Who We Are

Mainstack Group Ltd ("Mainstack", "we", "us", or "our") is a company registered in England and Wales. We are the data controller for the personal data collected through this website (mainstack.co.uk). You can contact us at sales@mainstack.co.uk.

2. What Data We Collect

We may collect the following categories of personal data:

Contact information: name, email address, phone number, and company name when you submit a form or contact us.
Anonymous usage data: we use Vercel Analytics, a privacy-friendly analytics service that does not use cookies, does not collect personal data, and does not track individual users. It collects only aggregated, anonymous page-view and performance metrics.

3. How We Use Your Data

We use your personal data for the following purposes:

To respond to your enquiries and provide information about our services.
To operate, maintain, and improve our website.
To understand website usage through anonymous, aggregated analytics.
To comply with legal obligations.

4. Cookies

This website does not set or store any cookies on your device. We do not use cookie-based analytics, advertising trackers, or any similar technologies. No consent banner is required because no cookies are used.

5. Legal Basis for Processing

Under UK GDPR, we process your personal data on the following legal bases:

Legitimate interests: where processing is necessary for our legitimate business interests, such as responding to enquiries and improving our services, provided those interests are not overridden by your rights.
Consent: where you have given us clear consent to process your data for a specific purpose (e.g. submitting a contact or demo request form).
Legal obligation: where processing is necessary to comply with a legal obligation.

6. Data Sharing

We do not sell your personal data. We may share your data with:

Service providers: third-party providers that help us operate our website and business (e.g. hosting). These providers process data on our behalf and under our instructions.
Legal requirements: where we are required to disclose your data by law, regulation, or legal process.

7. Data Retention

We retain personal data only for as long as necessary for the purposes for which it was collected. Contact and demo request form submissions are retained for up to 24 months.

8. Your Rights

Under UK GDPR, you have the following rights regarding your personal data:

Access: the right to request a copy of the personal data we hold about you.
Rectification: the right to request correction of inaccurate data.
Erasure: the right to request deletion of your data in certain circumstances.
Restriction: the right to request restriction of processing in certain circumstances.
Portability: the right to receive your data in a structured, machine-readable format.
Objection: the right to object to processing based on legitimate interests.
Withdraw consent: where processing is based on consent, the right to withdraw that consent at any time.

To exercise any of these rights, contact us at sales@mainstack.co.uk. We will respond within one month.

9. International Transfers

Your data is primarily processed within the United Kingdom and the European Economic Area. Where data is transferred outside these regions, we ensure appropriate safeguards are in place in accordance with UK GDPR requirements.

10. Data Security

We implement appropriate technical and organisational measures to protect your personal data against unauthorised access, alteration, disclosure, or destruction. However, no method of transmission over the internet is 100% secure.

11. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated revision date. We encourage you to review this policy periodically.

12. Complaints

If you are unhappy with how we handle your personal data, you have the right to lodge a complaint with the Information Commissioner's Office (ICO) at ico.org.uk.

13. Contact

For any questions about this Privacy Policy, contact us at sales@mainstack.co.uk.