Home physio has real limits, and a trustworthy provider names them upfront. See a doctor first, not a physiotherapist, if you have back pain with numbness in the groin or difficulty controlling bladder or bowel (a possible surgical emergency), unexplained weight loss or night pain that wakes you, pain following significant trauma such as a fall or road accident, a hot swollen joint with fever, or calf pain with swelling after surgery or a long flight. These presentations need medical assessment and often imaging before anyone applies hands-on treatment.
None of this diminishes what home treatment does well, which is early post-operative care, pain management for people who struggle to travel, elderly patients for whom a clinic trip is itself a fall risk, and the enormous middle ground of musculoskeletal complaints that need assessment, manual therapy and a supervised exercise programme. The point of the safety lens is not fear; it is that the same market that contains excellent DHA and DoH licensed clinicians doing hospital-grade work in living rooms also contains people who should not be touching a post-surgical knee, and the licence is how you tell them apart.