British payments processor Worldpay joined the London Stock Exchange on Tuesday in an initial public offering valuing the company at 4.8 billion pounds ($7.4 billion), the biggest flotation in what had been a lacklustre year for listings in Britain.
Utilize the input text as a context reference, choose the right relationship between 'Worldpay' and 'London' from the options.
Options: headquarters location, founded by, original broadcaster, parent organization