my brothers girlfriend, is not married. they was just a couple who met and fell in love and she got pregnant. We are 99.9% sure the baby is his, however she had not long split with her ex, they are a really lovely couple and are excited about the baby however we was just worried about her coming here and having the baby here as they are not married she is not a british citizen but we was hopeing the baby would be if the baby was born here and my brother who is british signs the birth certificate? even if the baby is not his he will still bring the baby up as his, will they do a dna test on the baby when he/she is born to prove he is the father?