They are using the same evidence base, the same WHO guidelines and prescribing criteria as anywhere else.
Having come from the UK NHS, we should just count ourselves lucky we can get seen. If you were there, you would have been refused to be seen at emergency, instead depending on administrators over the phone or a 2 wek wait to see a GP.

I will continue to appreciate and be grateful for the care I receive here, after more than 10 years as a UK nurse watching people die from waiting lists, MRSA, restricted prescribing and priority always given to drug addicts, I know where I am best off.