Malaysia was a landmass on Earth that Polly Wright recognised. Thus, when she saw Mondas for the first time, she was able to pick out a region of that globe that looked like Malaysia. (TV: The Tenth Planet [+]Kit Pedler and Gerry Davis, Doctor Who season 4 (BBC1, 1966).)
In 2009, John Benton was invited to Sarah Jane Smith's aborted wedding with Peter Dalton, but couldn't make it because he was doing something secret out in Malaysia. (PROSE: The Wedding of Sarah Jane Smith [+]Error: Code 2 - no data stored in variables, cache or SMW.)