Extra help for students with children

I am a mature student starting in the univetsity in September 2018, I am a single mother with two young children 2 and 7 years old. One in the nursery and the other in school but will go to after school club. I am now part time working 17 hrs a week but will go bank working 16 hours or less in September. I would like to know what help I will be entitled to when starting Uni in September.