Ortega’s company has bought the building at 1-11 John Adam Street, WC2 after Blackstone instructed Eastdil Secured and Knight Frank to sell the building in April for around 3.75% yield.Pontegadea has been in acquisitions mode this year, most recently bidding more than £1bn for Goldman Sachs’ London headquarters before missing out to sovereign wealth fund, National Pension Service of Korea (NPS).