I think it’s all going to depend whether we have an effective vaccine in the next few months or not.
If a vaccine is on its way soon, then we are in a holding pattern waiting for it and that seems right to do.
If all the current research turns out to have no end product or is still years away, then we will have to go back to some sort of normality, including more deaths of older/BAME/ill-health people.
Continuing lockdowns till say 2025 might end up causing more deaths from economic factors than Covid will
Of course a fully functioning track-and-trace system would be best of both worlds, especially as we are a smallish island that could track the virus more easily than most of Europe/USA/Asia.