Oysters for OAPs
One of the benefits of being 60 is the bus pass with which we could travel from Land's End to the Scottish border for nothing so long as we use local buses.
A further benefit we discovered when in London is that if you have a Senior Railcard and an Oyster card then you are eligible for a discount of 30% on the maximum daily charge on the Oyster. It is necessary to take both cards to an Underground ticket office (not a BR one) for the discount to be loaded. You will also have to register the Oyster if this has not been done.