Russell had been attached to the Everyman for many years, and Morrissey had seen him while he was working behind the bar downstairs from the theatre, though the two had never been introduced. Morrissey went to at least eight auditions, and in one read for the part of Icky opposite Paul McGann, who was reading for Billy. McGann, five years older than Morrissey, believed that he was too old to be playing the part of 16-year-old Billy and stepped back from the production, leaving the role to go to Morrissey. Spencer Leigh got the part of Icky and Ian Hart played the supporting role of Rabbit. Russell had a professional disagreement with the director Gordon Flemyng and producer Keith Richardson over the casting of 18-year-old Morrissey and Leigh; he believed that the sympathy of 16-year-olds running away was lost by casting older actors. Russell subsequently had his name removed from the credits of the original broadcast. After filming "One Summer" for five months, Morrissey went travelling in Kenya with his cousins. When he returned to Britain, "One Summer" was being broadcast, and he dealt with the new experience of being recognised in public. Morrissey had planned to study at RADA in London, but his colleagues at the Everyman encouraged him not to as he already had his Equity card. His "One Summer" co-star James Hazeldine convinced him otherwise, and he went to London for a year. He became homesick while there and did not enjoy the way RADA was turning him into a "bland actor". On a visit back to Liverpool he told Paul McGann's mother that he was considering leaving the college. Back in London, McGann met with him and reassured him that he had been through the same homesickness phase when he first went to RADA. Morrissey continued his studies at RADA and graduated on 1 December 1985. After a year at RADA, Morrissey went back to Liverpool to perform in "WCPC" at the Liverpool Playhouse. He then did "Le Cid" and "Twelfth Night" with Cheek by Jowl, and spent two years with the Royal Shakespeare Company (RSC), principally with director Deborah Warner for whom he played the Bastard in "King John" in 1988. He saw the role as a learning opportunity, as he had often wondered at RADA if he would ever have the chance to act in classical theatre. His performance has been described as "the most contentious characterisation of the production"; he received negative critical reaction from "Daily Telegraph" and "Independent" critics, but a positive opinion from the "Financial Times".