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.
Take context from the input text and decide on the accurate relationship between 'Standard Chartered' and 'London' from the options provided.
Options: developer, location of formation, owner of, product/material produced