Complex sentence: Tommy's Troubles was a British football themed comic strip which ran for ten years in the "Roy of the Rovers" comic and which is still fondly remembered by fans of the "golden age" of British sports-themed comics.
Split into simpler sentences: Tommy's Troubles was a British football themed comic strip which ran for ten years in the "Roy of the Rovers" comic. The strip is still fondly remembered by fans of the "golden age" of British sports-themed comics.