Same problem, same prescription.
0: https://www.myplannedcare.nhs.uk/seast/royal-surrey/
1: https://www.myplannedcare.nhs.uk/seast/oxford/
2: https://www.myplannedcare.nhs.uk/seast/buckinghamshire/
For each specialty, there's a waiting time, which is the time between you seeing your local doctor and then seeing a specialist, and then there's a waiting time given from when the specialist refers you for a treatment -- they need to be added together. Cardiology is 17+21 weeks, 10+12 weeks, and 25+28 weeks, urology is 12+18 weeks, 18+23 weeks, and 25+20 weeks. Orthopedics (for your osteoarthritis example) is at 17+24 weeks, 22+46 weeks, and 20+25 weeks.
> not indicative of waiting for urgent emergency life threatening
Hospitals in the US can't turn you away if you show up presenting urgent, emergency, life-threatening symptoms either, and I suspect those are not the types of medical care that people in the US are generally putting off for cost reasons (although I'm sure there are a few cases where they are).
The long wait times, 22 weeks mean average, > 63 week in 8% of extreme waits, are regrettable but not indicitive of waiting for urgent emergency life threatening required non elective procedures which are relatively prompt and immediate for the most part.