The Ealing Triangle was the name given to an area in Ealing surrounding Sarah Jane Smith's residence due to the amount of strange and alien occurrences within it.

Ruby White listed the Ealing Triangle as the reason for moving into 46 Old Forest Road. When questioned by Sarah Jane, she noted Trueman the astrologer, the Bubble Shock! factory, reports of rhinos in police cars, and alien plant life as just a few examples of strange occurrences. (TV: Goodbye, Sarah Jane Smith)

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