When your train is delayed, do you claim the compensation you're entitled to?
Not enough of us do, according to GLA Conservative spokesman Richard Tracey, who says that 85% of deserved refunds remain unclaimed by London commuters.
With around 25,872,000 delayed journeys across all London train operators each year, it's estimated that commuters are collectively left £56m out of pocket annually.
The stations where trains were mostly commonly delayed last month were Liverpool Street, Victoria, and London Bridge (surprise, surprise).
Information about how to claim delay repay compensation should be available on train operator websites — although unsurprisingly, you have to do quite a bit of digging on some of these sites to find it.
So we've given you a hand. Click on your train operator to find out about their delay repay schemes, including terms and conditions and time limits: Southern, Southeastern, Thameslink and Great Northern, Virgin, Grand Central, London Midland, TfL (that's tube, DLR, London Overground, TfL Rail), East Midlands, Abellio Greater Anglia, First Great Western, Heathrow Express, Heathrow Connect, South West Trains, C2C.