Brian Forshaw, from CPS Mersey-Cheshire, said: “This was an appalling pre-mediated attack on a young woman by Musa and Hassan.
“They knew the victim did not consent, nor could she consent, as they plied her with alcohol and forced her to suffer an evening of sustained sexual abuse.
“Their calculated actions and utter disregard for their victim have left her life completely changed, as she now suffers anxiety and is afraid to leave her house.