Warren was openly gay from his early years on Coronation Street, at a time when homosexuality was illegal. He said that he experienced homophobic treatment from some of the other writers. Warren also battled with drug and alcohol addiction before attending rehabilitation.
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- http://menmedia.co.uk/manchestereveningnews/news/s/1006/1006748_corrie_creators_jail_fear.html "Corrie creator's jail fear" Manchester Evening News
- http://www.digitalspy.co.uk/broacasting/s3/coronation-street/news/a268981/live-50-years-of-coronation-street.html Digitalspy – "50 years of Coronation Street"]