Take context from the input text and decide on the accurate relationship between 'Standard Chartered' and 'London' from the options provided.
Options: brand, member of, position held, headquarters location

The survey result comes despite Europe's biggest bank HSBC and its Asia-focused rival Standard Chartered currently deciding whether to axe their London headquarters because of a government levy on bank profits and the uncertain outcome of an upcoming vote on Britain's membership of the European Union.
headquarters location