teeth straightening?? Other options. Help

My Teeth are so shit, they are so small and look different sizes. They are not straight and they also look out of place, I won't smile because 1) teeth are so small and 2) they are all so out of place. What options is there in THE UK for straightening teeth? Other options?? would i be abke to get braces or would I have to pay ( so expensive) or what other options do the UK OFFFER for a beautiful smile ??