I think that £200.00 is way too much for a 14 year old child for Christmas. I personally think that giving money to children is not the best thing to do anyway. And I would certainly not give them such a big amount. I would put it aside for them for when they needed their own money later on in life and give them £50.00 and a nice present instead. But everyone deals with their children in their own way so it is really up to you to decide.