What will happen to my children if I am sent to prison, I am a single mum and have to boyz 5 & 8 I live in the uk

They could be placed with one of your relatives or another suitable person. They could go into foster care.

You decided to skip the Court Hearing and a warrant has been issued for your arrest - https://www.askmehelpdesk.com/criminal-law/what-will-happen-if-dont-attent-magistrates-court-shoplifting-557225.html#post2771481?