He's now said sorry so that's ok,Cummings teased in last weeks papers that there was more to come. I expect the delay in any official response from Boris was whilst the PMs SPADs and office desperately looked for hard evidence that would undermine what Boris said - like corroboration from others who were there, or photos.
as you were people

he needs to be replaced by a Right Wing MP, preferably one of the backbenchers.