I was admitted to hospital in France while on holiday there a few years ago and woke in the night to find an oriental looking doctor putting up a new drip. I speak some French so asked him what the drip was for, but could not understand his response. He did not speak English and it didn't even occur to me to ask for an interpreter. He eventually explained with a certain amount of gesturing and waving about of arms what the drip was for. I think I understood, but at the end of the day I had to take it on trust that the treatment was appropriate.
As for wastage in the NHS I worked for the |NHS for almost 10 years back in the 1980s and every year as the financial year end approached, we were told to order whatever we wanted on 'quickspend' as any money in our budgets which was left over was likely to result in budget cuts the next year. I can remember expensive pieces of equipment being bought at this time that were rarely used and we could have managed perfectly well without. I have no idea whether this practice continues as it is now many years later, but it certainly bothered me at the time. If I had any say, which I occasionally did, I always suggested we stock up on disposables as they would always be needed and would get used eventually thereby safeguarding the next year's budget without wasting money on unnecessary stuff.
I used to set myself personal challenges to carry out procedures using the minimum number of disposable items or using smaller / cheaper items for the same tasks as a way of saving money, but it was not the laboratory's policy to do that, just my own practice to contribute in a small way.