The statement only explains that twitter Inc is the parent company to twitter UK. "Twitter, Inc., our ultimate parent company, operates Twitter's primary service, which can be accessed on a variety of mobile devices, at Twitter.com and via SMS."
Twitter, Inc., our ultimate parent company, operates Twitter's primary service, which can be
accessed on a variety of mobile devices, at Twitter.com and via SMS.
Twitter UK's main activities consist of advertising sales and product development. p. 1