Labour's landslide election win shows few signs of unsettling London's financial heartland after the party's lengthy pro-business overtures, though many in finance remain wary they could be targeted to prop up Britain's stretched public finances further down the line.

Under leader Keir Starmer, the Labour Party has assiduously courted the City of London, as the financial district in known, mindful that his plans for boosting economic growth will need a big dose of private capital.

"To realize Labour’s bold ambition to make Britain a clean energy superpower, private sector finance must play a central role," Chris Hayward, policy chairman at the City of London Corporation, which administers the capital's financial district, said Friday.