Can I have a private post please, I'm looking for some advice please, my ex partner was cheating on me and and stealing money and things from my house, I kicked him out and is now being mentally and verbally abusive, to the extent where I have had to change my number, we have a 5 month baby together and he does not want to know him and denies him as has done with his other children, he is on his birth certificate and has his surname, but I want to change his surname to mine even if it's not changes on birth certificate but can be known as my surname, he won't give me any permission to do this so can I do it without his consent? My other children have my surname and his the only one that doesn't, any advice would be much appreciated x