More, more, more is what Ayda would like when it comes to Christmas decorations, whereas Robbie cannot shake the memory of feeding the electric meter at his nan’s house, so is happy with less. But, how many Christmas trees should one house contain? Three it seems remains the magic number, at least where one of the Williamses is concerned. As Ayda and her mother recall, frankly when you’ve grown up Christmas party-ing with Mr & Mrs Charlton Heston of Hollywood, there’s no going back to frugality.