What an astonishing waste of money...
You can't afford it, even with a bursary. It will hugely upend your life, and your children will enter uni and home ownership stages with parents who are just 'getting by', when their peers are bought homes for wedding presents. It happens. A lot.
I'd save and set them up for life at 18...
I wouldn't waste it on a private school education which employers increasingly see as an unfair advantage, even university admission depts, when, you haven't got the money for the real 'leg up' which the privileged increasingly rely on to get ahead of their peers... Uni without loans and a home without decades of saving, often missing the boat.
Private schools are a mixed bag anyway. They are only as good as their staff, especially class teachers, and they are chopping and changing more than ever now due to low salaries and staff retention problems... Easy to get a 'dud' class teacher for private money... When you could have got a superstar nqt in a state school for free...
What I'm saying is the high fees guarantee less and less these days. Loads of bullying still in private schools, lots of unhappy, lonely children. Don't be fooled by the flashy astro pitch and frilly headmasters wife... Doesn't mean a thing!