I?m afraid that living in London, endless house renovations are inevitable. I don?t think It is reasonable to expect this to cease during lockdown - a lot of the people undertaking the build need their jobs. As long as they work within the designated hours Then they are within their rights. If you have a good relationship with your neighbours you could perhaps come to an agreement if it is particularly loud and you are on a zoom for example. We had our neighbours undertake a whole house refurb but they had very good, considerate builders say it was actually fine! It may well be no where as bad as you fear - best of luck