Tulchan Communicatons LLP

Comcast is using London's Tulchan Communications to handle its $31B bid to acquire British TV broadcaster Sky, a bid 16 percent sweeter than Rupert Murdoch's 21st Century Fox's offer for the 61 percent Sky stake that it doesn't own.

Calling Sky "an outstanding company," Comcast CEO Brian L. Roberts said the Philadelphia-based parent of NBCUniversal plans to use it as a "platform for growth in Europe."

The satellite TV company has 23M customers, mainly in the UK, Italy and Germany. "Sky has been a consistent innovator in its use of technology to deliver a fantastic viewing experience and has a proud record of investment in news and programming," said Roberts in a statement. "It has great people and a very strong and capable management team."

Comcast will retain Sky's London headquarters. The deal would boost Comcast's international revenues from nine to 25 percent.

Tulchan's founder Andrew Grant and partners Tom Murray, James Macey-White and Graeme Wilson work Comcast's Sky bid.

Brunswick Group's London office (Jonathan Glass and Andrew Porter) and New York outpost (Justin Dini and Laurie Hays) handle investor outreach for 21st Century Fox.