Based on case numbers, deaths, and the hospital admission numbers I don't think we'll go back into full lockdown and this will be the last one. Masks, distancing, reduced capacity at venues, etc will probably continue for the foreseeable future until an even larger chunk of the population is vaccinated but their use will be relaxed over the next few months before being more or less done away with completely. If we get a lot of new variants or a surge in case numbers, e.g., during the winter virus season, then I can see there being a light-handed return to some of the restrictions such as masks in public spaces but not a full lockdown.
By winter 2022 we'll all be back to normal, Jo masks, no restrictions. You might find that if there is a localised outbreak such as in a particular care home or hospital, then there will be deep cleaning and no visitors until it clears, much like they currently do with outbreaks of norovirus.
By next winter, and certainly the one after, we'll start seeing the second generation of coronavirus vaccines and when you go for your annual flu jab you'll get flu in one arm and covid in the other, eventually they'll both be in the same syringe and you'll get one jab for both. Within a year or two it'll be the case that the vulnerable and healthcare workers are offered an annual covid jab at their GP or the pharmacy exactly like flu jabs and anyone who doesn't qualify for it free can pay £8-£10 to have it done also exactly like the flu jab currently is. Covid will end up being thought of in the same way as flu and instead of October to February being known as flu season it'll be known as covid and flu season with the same basic advice we have now for flu - get vaccinated, practice good hygiene, if you get ill then stay home/drink fluids/rest, seek medical advice as needed.
All the people doom-mongering that we'll be in lockdown forever more and this is the government priming us for long term control seem to forget that we've done this all before. There have been pandemics throughout history, both ancient and modern, with various restrictions imposed centrally and locally. Those restrictions don't last forever and sooner or later normal life resumes.
you work in the public sector and you are still on full pay for doing a much reduced workload than usual...
This is pure bullshit. Every public sector worker I know, including DH, is still carrying a full workload.