Well, I must say all of those options would be nice but depending on the site for NHS your professional attire does change. At most outpatient, non-corporate sites, it is business casual and Fridays you can wear jeans. But at the corporate level sites, it is Strict business attire.
Years ago we used to get together and have happy hours and holiday parties. Things change as new staff come in and policies change.
A typical day in the life of a NHS employee in one word, HECTIC. You are so busy lunch time will speed past you. And your still swamped with work. If constantly busy is what you're looking for, than this is the place for you.