I'm not in favour of compulsory vaccination. As I said, it is currently illegal in the UK anyway. However.....
The UK government (along with many others) has seen fit to impose some of the most Draconian restrictions on liberty this country has ever seen (and included in that are some which are harsher than during wartime). Nobody knows whether or not these had any effect on the spread of the disease. Everybody says that they must have, but there was no control to see if this is true or not. But let's assume they did have a beneficial effect. It is clear now that vaccination is managing to prevent the most serious effects of the disease from occurring in many. Despite the high level of infections that are evident, hospitalisations and deaths remain relatively low. Those who are vaccinated stand a far greater chance of remaining out of hospital and surviving the virus. This means that those who are not vaccinated don't have that enjoyment.
The original aim of the lockdown measures was to "save lives and protect the NHS." Presumably any further Draconian measures will have the same aim. However, those who are vaccinated stand a far smaller chance of burdening the NHS so there really is far less need to impose these measures on them. So in my view, if more restrictions are needed "to protect the NHS" they should be targeted towards the people who are most likely to trouble it, rather than others who are less likely to do so. In short, if anyone is to be subject to further restrictions it should be the unvaccinated (with appropriate exceptions for those who cannot have the vaccine for genuine medical reasons).