Private Healthcare??

If we are only moving for 9 months, is it possible to get private healthcare and not participate in the national health plan? I have three healthy children and most likely would only need a doctor in case of an emergency or a mild illness.

If you're working, your tax/national insurance will still go to fund the NHS, that's compulsory, but you don't have to use the NHS if you don't want to. 

If you can afford private health insurance I would say it's a very good thing to have because if any of your family do need to see a specialist you will be able to do so much more quickly as you can skip the huge NHS queues.  You will still need to see an NHS doctor first.  However there are some private GP's at some of the private hospitals so you can actually skip the NHS but it is very unlikely that any private health insurance would pay for visits to a private GP. 

Indeed, the things you said you can only really get on the NHS... I think there is a private A&E or two, but haven't a clue where.