I am very fortunate & get cover through work.
I was recently knocked off my bike, & have done the whole post accident recovery treatments via BUPA. (That’s 20+ physio treatments offered on both a hand and shoulder injury, a consultant appointment for the shoulder etc etc). As said above, all the appointments are at my convenience, not the medics. (The benefit of BUPA to my employers is that I don’t need time off in the working day for appointments)
I pay tax on a Benefit in Kind of £1200 for me and the family. I have to pay the 1st £100 as an excess, on the 1st treatment in a 12month period.
IMO it’s well worth it, we’re all sporty in the family and seem to spend a fair amount of time at the physio for various sports injuries