Why does the UK qualify automatically for the Eurovision final? Full list of countries that can skip the semi-finals

EUROVISION fans tuning in for the semi-finals will notice that the UK's act is guaranteed a place in Saturday's showpiece. Look Mum No Computer is flying the flag for Brits in Vienna with his track Eins, Zwei, Drei, and won't have to battle it out on Thursday for his spot. Why does the UK qualify...