Privacy Policy
Last updated: March 2026
Who We Are
The Underdog is operated by Creative Sauce Ltd, trading as The Underdog. We are registered in England and Wales under company number 12582512.
Our data controller contact is: hello@underdoguk.com
What Data We Collect
When you use The Underdog, we collect the following information:
- Email address (for account registration and communication)
- Documents you upload for analysis (case details, contracts, evidence)
- Case history and saved cases
- Usage data (which tools you use, how often)
Why We Collect Your Data
We use your data to:
- Provide you with The Underdog service
- Save and manage your case history
- Send you relevant updates and information about new tools (with your consent)
- Improve and develop The Underdog
Legal Basis for Processing
We process your data under two legal bases:
- Legitimate interest: Processing your information to provide and improve the service
- Consent: For marketing communications, we only send emails after you have opted in
How We Handle Your Documents
Your documents are processed by AI (Claude API) for analysis only. They are not stored permanently on our servers. When you upload documents:
- They are sent to Claude AI for analysis to generate letters and advice
- The analysis is returned to you
- Your documents and the analysis are saved locally in your browser
- Documents are not stored indefinitely on our servers
Third Parties We Share Your Data With
We share your information with the following third parties to provide the service:
- Stripe: Payment processor for subscriptions and purchases
- Anthropic/Claude: AI provider for document analysis (documents sent for processing)
- Vercel: Hosting provider for The Underdog platform
- Airtable: Database for storing user records
These third parties are bound by confidentiality agreements and only use your data to provide services on our behalf.
Your Rights Under UK GDPR
You have the following rights regarding your personal data:
- Right of access: You can request a copy of your personal data
- Right to rectification: You can ask us to correct inaccurate information
- Right to erasure: You can request deletion of your data ("right to be forgotten")
- Right to data portability: You can request your data in a portable format
- Right to object: You can object to certain types of processing
- Right to withdraw consent: You can withdraw marketing consent at any time
To exercise any of these rights, contact us at hello@underdoguk.com
Data Retention
We retain your account data and case history for as long as your account remains active. When you close your account or request deletion, we remove all your personal data from our records. You can delete your data yourself at any time through the Settings page.
Cookies and Local Storage
The Underdog uses minimal cookies and storage:
- localStorage: We save your case history and preferences locally in your browser so you can access them immediately
- Essential cookies only: We use minimal essential cookies for authentication and security
You can clear your browser's local storage at any time, which will delete all your saved cases.
Contact Us
If you have questions about this Privacy Policy or how we handle your data, please contact us at:
hello@underdoguk.com
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of significant changes by updating the "Last updated" date at the top of this page.