The NHS does not make extensive use of them now
Hospital email is better encrypted and secure and is the preferred medium of choice now.
Been a few years since I last saw a facsimile machine in use...
The NHS still make use of fax more than you think (despite Hancock claiming otherwise), they just use software based solutions these days rather than physical fax machines
We've been trying in vain to remove all traces of fax for the past several years but what you find in the NHS is at least one department will flat out refuse to let you get rid of their decades old technology 'just in case' for example the Pathology department still have a physical fax machine, an analogue phone line, probably also some tin cans and a piece of string so they can still transmit results even if the entire building is burning around them!
Covid has had many negatives but I'll give it one positive it has given NHS IT systems a sharp kick up the proverbial as departments have suddenly had to adapt to being able to carry out their work from many more places other than their hospital base!