Utilize the input text as a context reference, choose the right relationship between IP Group and LONDON from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

LONDON (ShareCast) - (ShareCast News) - IP Group (LSE: IPO.L - news ) has made a £50.3m fair value gain in the value of its stake in portfolio company Oxford Nanopore Technologies after the Oxford University spin-out venture raised £70m in a new financing round.

Answer: headquarters_location