Take context from the input text and decide on the accurate relationship between 'Worldpay' and 'London' from the options provided.
Options: subsidiary, owner of, headquarters location, founded by

French payments company Ingenico Group rose 6.8 percent as prospects it could stretch its finances to launch a bid for Worldpay evaporated on Friday when its privately-owned British rival announced plans for a London floatation, instead of a sale.
headquarters location