Doodledog
Before there could be any sort of penalty for non-attendance there would have to be a universal roll-out of things like text reminders and access to the NHS app. I think that goes without saying.
Maybe it could be something that devolved countries could deal with in their own way?
Scotland already has. We're in Scotland.
We get text reminders the previous day, of all our GP , Practice Nurse, Hospital and dental appointments.
We're both on a regular BP home-monitoring system organised by GP, and get two email reminders to do it on the required day ( am and pm readings). We submit the readings online and get instant automated feedback on the result (either OK. or advice) The results also go to the GP practice who reviews them every 6 months and texts the result.
We don't have to ask GP for repeat prescriptions of longterm meds. They go straight to the convenient local pharmacy of my choice where I pick them up. No charge for prescriptions
Our GP practice shows a daily count list of missed appointments; repeat offenders will be de-listed as a the practice patient . Late arrivals may have to book another appt . on another day.

