Why Every Lead Actor Left Doctor Who
8. Colin Baker
Colin Baker was at the helm for one of the most turbulent periods in Doctor Who history.
In 1985, the show was put on hiatus due to concerns about its quality and its levels of violence. BBC executive Michael Grade believed Doctor Who felt cheap compared to the likes of Star Wars and E.T., saying "What we were serving up as science fiction was garbage".
Not exactly a fair comparison, but point taken.
Though Doctor Who did return after its hiatus with the season-long story Trial of a Time Lord, it wasn't long before Baker himself had a target on his back. With higher-ups still not convinced by the show's quality (or ratings), they removed him from the role.
Though he was offered a final adventure that would conclude with the Sixth Doctor's departure, Baker refused to return for anything less than a full season. As a result, he wasn't even present for his own regeneration scene, with Sylvester McCoy instead adorning a blonde curly wig.