Precisely. You've never heard of him, and despite what one demented fan of Adam Rickitt endlessly lies, you've checked on wikipedia and there's no Doctor Who character called Ben Chatham. Good - he was an insufferable alcoholic snob and this site is dedicated to giving him and his adventures the mickey-taking they deserved!
"Personally, I think Ewen is the craziest guy I know in Doctor Who fandom. William Burroughs without the homosexuality or the heroin addiction." - Miles "Balls of Steel" Reid