Take context from the input text and decide on the accurate relationship between 'Man Group' and 'LONDON' from the options provided.
Options: publisher, headquarters location, industry, brand

LONDON (ShareCast) - (ShareCast News) - Shares (Berlin: DI6.BE - news ) in Man Group (LSE: EMG.L - news ) slumped following a press report that the chairman of the hedge fund manager's China unit, Li Yifei, has been taken into custody by Chinese authorities to assist with a police probe into market volatility.
headquarters location