Im in two minds about my sons last name being the same as his dads.

His father is a good man, just a lousy partner... so we split over 18 months ago.

BUT.... I do wish I had put my surname on our DS's birth cert.. but we decided that we would put his dads on there as we were planning on getting married etc.. but obviously that never happened.

I believe it is 18yrs old that children can legally change their names without both parents consent.