I know no one knows the answer to that but what will it take for us to get our old life's back to normal again?
If people are expecting an announcement in one of the daily sermons that says as of next Monday it's all back to normal, no distancing required and all the other effort that goes with it, well we all know that will never happen. Johnson or whoever is wheeled out just aren't going to do that. If they they did, a proportion of people will be saying "what's changed then?" or "oh no, I don't believe you, it's not safe".
People will probably make their own decisions on what they are going to do, as they are already. If their particular group are happy not to distance, that's what they will do. Also, there will only be so long before employers give people a choice, back to work in the office or lose your job, it's their only choice to keep a business going.
The problem is the government have frightened a fair proportion of the country to death and don't know how to get out of it. The media have done this to a greater extent, but want it to continue as it makes great headlines for them.
Anyone saying they will only go back to their normal when a vaccine is available, could be waiting a long time, there may never be one.