Mitch,
Although a bit confusing as he didn’t quote the post to which he was replying, I think Phil’s post above yours about needing to live in London and receiving high rate mobility was about the Taxi-card (per posts on previous page of this thread), not the Veterans Oyster.
I also have the Veterans Oyster and use it all the time when in and around London. It really is a decent ‘perk’, especially now such as TFL Rail (formerly Heathrow Connect) can be used on the stopping trains between Paddington and Heathrow.
I would urge any War Pensioner/AFCS recipient to apply for one, whether a frequent or only occasional visitor to London.
Linky to for details/how to apply for Veterans Oyster:
https://tfl.gov.uk/fares/free-and-discounted-travel/veterans-oyster-photocard?intcmp=54722
Dave