After posting two or three messages on here, dithering and asking for advice on whether to home educate or keep trying with school, we finally de-registered them.
If I'm perfectly honest, I partly feel relieved that the decision is finally made but also rather scared at the enormity of what I've taken on. They're both high school age (yrs 7 and 8) and so the possibility of exams/college/starting work are in the not too distant future.
School though became a living nightmare. The complaints of pupils screaming, swearing, throwing things across the class, teachers unable to take proper control of lessons, my eldest being physically attacked and my youngest being sat with his class in front of a blackboard with the words written "you are all going to fail in life so why bother trying". The list goes on and on. Things were far from good.
So - here we are, on our new adventure. Pretty scary and challenging but rather exciting too. Our two children are already happier, and have been getting along so much better since the Easter holidays. I still worry that I've done the right thing and hope I haven't ruined their future career prospects, but they are safe and they are happy and I suppose we'll cross all the other bridges when we come to them.
Many thanks to all those who responded to my previous messages, and who gave words of advice and great wisdom.