On 14/04/2016 15:13, Walter Briscoe wrote:
[...]
You might like to consider taking a photo of the last 8 transactions at
a POM (Passenger Operated Machine).
Tourist Information Offices still issue paper statements.
I can't find a list on tfl.gov.uk, but have used them at Euston, King's
Cross St Pancras and Liverpool Street and believe there is another at
Heathrow Terminals 1, 2 3. There are probably others.



https://tfl.gov.uk/fares-and-payments/where-to-top-up-and-buy-tickets/visitor-centres

A friend for a long time claimed expenses by submitting (or at least
keeping) a smartphone photo of the journey history screen of their
Oyster card!