There are some at the Royal Liverpool University Hospital here. Basically you register for one and it's your to use as long as you work there. At Chester bus station, they have bike lockers too. Those ones have a lock that means the local council can open them, without breaking the user's lock, to check out what's inside. Right now I'm trying to get some out in at the Health Centre where I wok here in Liverpool, cos there's several of us bike to work.