Scandal after scandal has rocked the City in recent years, tarnishing its carefully cultivated image as the world's leading financial centre.
First, British banks abused their clients by selling them unnecessary insurance. Then their employees were caught manipulating financial benchmarks like Libor and the gold fix. Next, over $6bn in trading losses were served up by a rogue trader nicknamed 'the London Whale'.
This month, fresh allegations of wrongdoing and improper conduct have emerged, albeit on a smaller scale, further denting investor confidence.