Terms & Conditions

These terms govern your use of the Unknown Sender website and, when bookings open, your participation in the Unknown Sender experience. By using this website or purchasing a ticket, you agree to these terms.

Unknown Sender is operated by Treadwell21, United Kingdom. Contact: hello@unknownsender.co.uk.

About the experience

Unknown Sender is a real-world, story-led mystery played on foot through a UK city. Players receive messages on their phone and follow clues through real streets and venues. Each session lasts approximately 90–120 minutes.

Participation requires a smartphone with mobile data, sufficient battery, and the ability to walk and stand for the duration of the session. Players are responsible for their own safety, including observing traffic rules and the law at all times.

Eligibility

Players must be 18 years of age or over. By booking, you confirm that you and every member of your team meet this age requirement.

Waitlist

By submitting your email address on this website, you agree to receive occasional emails about the launch of Unknown Sender. You can unsubscribe at any time using the link in any email we send, or by emailing us.

No payment is taken at the waitlist stage and no purchase is implied.

Tickets and bookings

When bookings open, tickets will be sold through this website in pounds sterling (GBP). Payments will be processed securely by Stripe. A booking is confirmed once payment has been received and a confirmation email has been issued.

Refunds and cancellations

You may cancel your booking for a full refund up to 48 hours before the booked start time. Within 48 hours of the start time, tickets are non-refundable but may be transferred to another adult player by contacting us.

If we cancel or reschedule a session for any reason, we will offer you either a full refund or a transfer to another available date.

Conduct during the experience

Players must behave lawfully and respectfully towards other players, members of the public, and staff at any venues featured in the experience. We reserve the right to end a session, without refund, if a player behaves in a way that is unsafe, abusive, or that puts the experience or other people at risk.

Intellectual property

All content on this website and within the experience, including text, images, narrative, and software, is the property of Treadwell21 unless otherwise stated. You may not copy, reproduce, or commercially exploit any part of it without our written permission.

Liability

The experience takes place in real public spaces. We are not responsible for the actions of third parties or for events outside our reasonable control. Nothing in these terms limits or excludes our liability for death or personal injury caused by our negligence, for fraud, or for any other liability that cannot lawfully be limited or excluded.

Governing law

These terms are governed by the laws of England and Wales, and any disputes will be subject to the exclusive jurisdiction of the courts of England and Wales.

Changes to these terms

We may update these terms from time to time. The current version will always be available on this page; the date at the top indicates when it was last changed.