![Goldman Sachs's London HQ](https://assets.fnlondon.com/2016/04/IMG010654_full4x3.jpg)
A vast construction site in the heart of London is a testament to Goldman Sachs’s $500 million bet on the city’s global financial clout.
But the bank's new European headquarters might be a little emptier than planned if the UK votes in June to leave the European Union, Goldman's executives say.