I'm a nurse who works in a hospital that imposes a charge of £30/month to park but a space is not guaranteed. It can be almost impossible to park after 0930am. My shifts start at 0730 but I sometimes come in on days off for meetings, for teaching (either to carry out or attend) or because I'm on a later start time if, for example, I had to stay hours at the end of the preceding shift, until after midnight. I've mainly then had to use the public car park (where it can also be difficult to find a space) at a cost of £15 for the time I would be using it - there generally isn't time in my day to go out of work to move the car.
I've had at least 3 parking fines within the hospitals I've worked in, always with a valid permit but parked in the wrong zone due to unavailability of spaces in the designated zone. Nurses have had pay cuts over the past few years so parking fines of £60 can really affect income. One of the agency nurses I worked with left her shift at 10pm to find she had been clamped by the hospital parking attendants and they would not release her until she paid. Most of us don't come to work with much money or credit/debit cards so she had to get a taxi home (paid at the other end) and sort out the car the following day. She probably made no money for that particular shift.
Car parking for hospital staff is becoming increasingly difficult because, in London, lots of other hospital departments have closed due to centralisation of services on one site. There are now too many staff competing for too few spaces.
I know some people who park some distance away in residential streets but I also have a friend whose car was impounded when she inadvertently parked on a private road (it was a night shift, she didn't have a staff permit because she only worked occasional bank shifts). She had to pay around £200 to retrieve her car.
I know it can be annoying for residents who live near hospitals or schools but workers do need to get to work and to do that we need to park our cars. Certainly, public transport cannot be relied on for those of us who live long distances from work and who work unsocial hours.
My next door neighbours have about 5 cars to park so there is always a car parked outside my house and it can be difficult for me to exit and enter my very narrow drive (occasionally I've been blocked but not for long). I just have to tolerate it because it's easier to get on with people than not. In many other ways they are excellent neighbours.