Jim,
You've made this comment three times now:
If the vote goes against him he has threatened to withdraw the whip from and prevent from standing in future elections, all who voted against him

Boris has not said he will prevent them from standing for parliament. He will prevent them from standing for parliament as Conservative candidates. There is a big difference, as implied in Steve Shaw's comment:
I'm fearing the worst. Though I do wonder what would happen if (a) all the Scottish Tories lost their seats, (b) a considerable number of Tory "rebels" stood as independents and won their seats, as some undoubtedly would,