I think cleaners are considered front line staff - if they aren't, they should be!
Years back, I did a little software job for a local hospital in the UK. It was to deal with the provision of teas coffees sandwiches and biscuits for meetings various locations throughout the hospital.
The manual system is then in use, required the person placing the order, usually a doctor, to fill out a form in quadruplicate and submit the four copies to the catering department. One of the four copies was sent to a junior manager on a 50% part time salary for authorization (her sole responsibility). When I asked how many such requests were refused, the manager replied “Oh - we never refuse them” so I responded by asking So what is the point of “authorising” something that you never refuse to which the manager responded “well, it's public money, so it has to be properly accounted for!”
I'm quite sure there are literally 10s of thousands of instances of similarly, criminally wasteful management in the NHS.