(Bloomberg) A trip to the restaurant that sits atop the No. 1 Poultry office block in London’s financial district is a chance to experience firsthand the Tale of Two Cities that’s upending the commercial real-estate market.Most Read from BloombergSingapore Passport Is World’s Most Powerful, Replacing JapanTesla Investor Rode a 14,800% Gain Thanks to 27-Year-Old AnalystMorgan Stanley Moves 200 Tech Experts From China on Data LawMeet the Billionaire Who Convinced Messi to Pick MLS Over Saudi Ar