Different name without official documents

[BHAFATBOY]

Hi all
I have a question for you guys and gals,
My birth surname is not one I use now and have not used since I was 4. I remember my mum signing some stuff to say I am now known as a different surname. My passport / drivers licence / national insurance number etc all show my surname now so will this be an issue as I have never had documentation to show my name being changed officially anywhere.

Thank you