The hospitals where my clients are do not have lots of activities and therapy. The biggest teaching hospital here in my jurisdiction is a place where they make people wait for drugs to zombie them out so they can be released. The clients have very few groups or activities and mostly spend the time sleeping or pacing and waiting for cigarette breaks. There are not set bedtimes. There are wall phones and computers for clients to use. It is very much a chemistry oriented facility - the mds openly scoff at groups or talk therapy. The social workers are for placement assistance only.
I am not saying that is how it is everywhere -and I have no idea what the facilities are like in the UK- just in my experience in representing clients in my state in the US - the orientation of the facility is not always that of keeping the client occupied in self growth. There is another hospital that is a bit more behavioral and has more groups available. They are not all the same.