Hello all (I'm new to the forum by the way, just thought I'd drop that in)- these posts make me smile and sympathise at the same time! My partner has a four year old girl who is lovely but can be very independent, stubborn and challenging.
When she gets noisy and tantrumy we've found that just persitently reminding her that she's choosing to behave like that- and what will happen if she continues to make that choice (ie no cbeebies, no treats etc) works in most cases. Failing that, my partner used to be a teacher in a difficult school; telling her that she's being "just like the naughty children in Mummy's school" can work a treat- she sees herself as above them!
Hope this helps, even a little, it's reassuring to see that the toddlers of Britain are pretty much the same! Take care,
Mike