I'm not yet retired so won't be eligible for a bus pass for a couple of years.
I got a bus pass at 60, although I was not yet at the state retirement age. I don't think the two things are connected.
No-one notifies you of being eligible for a bus pass - you just have to apply for it, to the local authority.
Should women have equal pay and opportunities?
To think that London, or anywhere else for that matter, does not belong to any one demographic