To get admission in B.Sc. Forensic Science one should have completed  12th with PCM/PCB. 

B.Sc. Physics, Chemistry and Forensic Science 

12+2 with PCM subjects

Pursue B.Sc Life Sciences, Chemistry, and Forensic Sciences

At least four good GCSE passes, including English and either science (biology/chemistry) or Maths and at least one A-level or equivalent in a science subject.