Utilize the input text as a context reference, choose the right relationship between 'daughter' and 'London' from the options.
Options: manufacturer, location of formation, legal form, distributed by

Real estate tycoon Niranjan Hiranandani is facing legal trouble from his daughter Priya Hiranandani-Vandrevala, who sought arbitration in London in 2009, claiming that her father and brother Darshan violated a 2006 family agreement.
location of formation