A huge US bank is ignoring Brexit warning signs and is buying a £300 million new London HQ

Wells Fargo, the world's biggest bank by capitalisation, has given a huge vote of confidence in London's future as a financial hub post-Brexit, signing on for a new £300 million ($396 million) headquarters in the UK capital.

The Financial Times reports that the US lender is buying an 11-storey building being developed near London Bridge called 33 Central.

Wells Fargo will move into its new London offices in 2018. The move will bring its 850 London staff, currently spread across 4 buildings, into one location. Wells Fargo has 269,000 employees globally and a market cap of $242.4 billion (£183.3 billion). Most of its business is done in the US, but its London offices help American clients looking to do business here.

The office block sale is one of the biggest property deals since the UK's shock vote to leave the European Union on June 23. Since then there have been concerns about both Britain's property market and London's status as a financial hub.

On the property front, multiple commercial property investment funds, which own at least £15 billion worth of UK buildings, were forced to freeze withdrawals after being overwhelmed by people trying to pull money out of UK property.

However, the collapse in the pound to a 31-year-low against the dollar is making British assets more attractive to some buyers. US property fund Madison International Realty says it is planning to spend as much as £1 billion buying bargain London buildings.

As for finance, multiple banks have warned they may have to relocate thousands of jobs away from Britain if the UK fails to negotiate passporting rights that allow them to operate across the EU from London. JPMorgan, Goldman Sachs, and UBS have all floated the idea, despite pleas from the Treasury to play down the risk to jobs and a joint letter from the government and investment banks pledging the help London "retain its position as the leading international financial center."