A worked example · 30 seconds
Here's what Untap does, on a real booking.
We scanned a sample Trainline confirmation. Watch what we found, then sign in to try it on yours.
Sample · Trainline booking

Reading the booking confirmation…
- Reading the booking confirmation
- Identified the journey
- Checking the delay records
- Working out what you can claim
That was our money. Now try with yours.
We don't take a cut. We don't touch your bank. You decide what to send.
The example, in writing
The booking above is a sample GWR journey from London Paddington to Bristol Parkway. The train arrived 19 min late. That is past the 15 minute threshold on that operator, so a quarter of the single fare is claimable, which comes to £12.98 on this ticket.
Untap reads the confirmation email, checks the arrival time against the industry performance record, and applies the operator's own published rules. It does not file the claim for you and it does not take a percentage. You get the amount, the deadline and the link to the operator's form.
The rules behind that number are in the Delay Repay guide, which lists the threshold and claim window for all 23 operators. If you would rather check something yourself first with no account at all, the TfL statement checker runs the real pipeline and stores nothing.