There could be a Brexit bonanza for London law firms, with huge fees for advising on the financial aspects of the UK’s separation from the European Union, but lawyers worry that Brexit will be bad for other areas of their business.

Brexit would be "the most immense undertaking in financial legal history", according to Jan Putnis, a financial regulation partner at Slaughter and May, while Richard Cranfield, a corporate partner at Allen & Overy, said it would be "the biggest demerger" ever seen.