Complex sentence: He was played by Leeon Sawyer when the character arrived on the Close in March 1990 until September 1996 when Steven Cole took over the role from December 1996 where his character stayed until his departure in April 2001.
Split into simpler sentences: He was played by Leeon Sawyer when the character arrived on the Close in March 1990 until September 1996. Then, Steven Cole took over the role from December 1996 where his character stayed until his departure in April 2001.