Hi, I have no idea how one would manage this either, but am very interested if anybody has done this. I'm not particularly planning this but dd is considering a specialist school that happens to be private day or boarding school. I'm sure in my case I would need private tutors for several subjects. You could do it yourself I think if you were confident enough. Many private schools use Galore Park work books, but I have been told some subjects are very dry.
No, but I'm thinking about that for my children. I have 4 pre-schoolers (!) and am wildly unimpressed by the national curriculum, even as provided at our two local Ofsted 'Outstanding' primary schools. I'm thinking about home-educating them possibly until prep age, or until 11. How is your thinking going?