when does pretty little liars season one finish and season two start in the uk?

well i'm so confused. season one hasn't finished yet on mtv in the uk,
and season two starts on tuesday on abcfamily in the usa. abcfamily
have said all new episodes starts on tuesday, the 14th. but i didn't
think season one has even finished yet, has it? are they just on about
in the usa, because i don't even have abcfamily or watch it on
tuesday.

when does season one finish in the uk, and then when does season two
start? how long after it starts in america will it start in the uk?