I was quite surprised. My Blue Badge runs out at the end of the month, I queried whether I would get some kind of reminder, as the disability following the stroke is pretty-much permanent.
I got a reply from the Blue Badge people, who in my case are Wiltshire Council, containing a URL on the UK government's web site, which I could use to re-apply. The thing which surprised me was that, if I hadn't have been on the ball, I reckon things would very likely be left just to run out.
I know when I first applied for the Blue Badge - I was a couple of weeks out of hospital and, basically, didn't have a clue what was going on. My wife applied for the badge on my behalf. I can quite easily imagine disabled people who, for one reason or another, don't/can't keep on top of these things, and don't have anyone to keep on top of things for them. There are many ways in which I'm grateful because, despite what I've lost, I still have 99% of my brain power. (except it is 110%!)
But it kind-of surprises me that a process aimed specifically at disabled people is so not geared toward disabled people.