What is the relationship between 'Worldpay' and 'London' in the context of the input sentence.
Options: headquarters location, product/material produced, employer, member of

French payments company Ingenico Group (Swiss: ING.SW - news ) 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