Adding my surname to my children's registered surname

[EllysMom]

I am looking for people with similar experiences to determine probable outcome. Two of my children have their father's surname as registered at birth. I split with their father and subsequently want to add my surname to their registered surname but the father will not give consent.
I have since married a new partner and double-barrelled my surname with his. We have had a child together and we have given her the same double-barrel surname. Additionally my husband took my name to double-barrel his too.
So as the father of my eldest two will not give permission to add my surname to theirs, I want to take it to court so that I can get the name altered legally.
Has anyone else done this successfully in a similar situation? All my reading suggests that without his permission I have little hope of getting their names altered but I can't believe this to be true in a fair and modern world. Why should his opinion override mine when I am raising the children? He sees them 4 days a month and pays some maintenance but I raise them and pay for everything else. So surely a court would go for the compromise of the children using both names, rather than just going in his favour and just keeping his name?
Anyone with experience of following this through and your outcomes would be appreciated to help me to decide whether to get a court hearing booked.

[AShadowLurkingInTheShadows]

You have to prove that it's better for the children having both names. Courts will most likely be open to both as you're not wanting to take his name away. You have to say why it would be in the best interest of the children, to feel accepted as part of the new family, school, drs appointments, ect.

You can only give it a shot!