Utilize the input text as a context reference, choose the right relationship between 'Elementis' and 'LONDON' from the options.
Options: headquarters location, developer, distributed by, publisher

LONDON (ShareCast) - (ShareCast News) - Chemicals group Elementis (LSE: ELM.L - news ) saw its first half pre-tax profit decline, as its oil and gas related and businesses reported a drop in sales.
headquarters location