Refunds at ticket machines - redundant Oyster Cards

http://www.tfl.gov.uk/fares-and-payments/replacements-and-refunds/refunds-at-ticket-machines?intcmp=26352

If like me you use contactless (ie a bank or credit card) rather than Oyster PAYG, you should be able to redeem your unwanted Oyster Card's deposit and unused PAYG balance at an LU ticket machine.

I tried it on Barking's non LU ticket machines but wasn't offered the option. Not really a surprise, but still a disappointment.