Compared with what Clegg might have earned had he stayed in public life in Britain, after losing his Westminster seat in 2017, it’s off the scale. Nevertheless, he is not planning on retiring. He’s not the type to put his feet up. He’s permanently driven, swimming regularly at his health club, playing padel and maintaining an impressive level of fitness for someone his age, constantly on the phone, attending meeting after meeting. His deal with Zuckerberg, which remains until he leaves, is that he could return to London provided he stuck to California time three days a week. This meant he was forever on calls into the early hours, long after the rest of the family were in bed.