I think you should stop and think Tosh for 15 minutes. People are listening to you telling them it's ok to go to work tomorrow when it really isn't. Cleaning mrs. Smiths windows in not 'absolutely necessary". Your a clever bloke and can twist and play with words but you are wrong if you think this doesn't apply to us.
If Boris only wants a list of specified people to go to work, he would've listed those occupations vital to the effort against covid-19.
But he hasn't because what he said was perfectly clear.
You can travel to and from work, if it's absolutely necessary and you cannot do it from home.
If you're a window cleaner you cannot clean windows from home, so it's absolutely necessary for you to travel to work.
Other countries, like Spain, have EXACTLY the same rules.
When I leave for work tomorrow I'll see a whole load of builders building a new housing estate. Guaranteed.