Herbert Smith, Fountain Court and Five Paper Buildings have taken roles on a high-profile action against PricewaterhouseCoopers (PwC) that has seen the accounting giant fined £1.4m.

The proceedings were launched by the Accountancy & Actuarial Discipline Board (AADB) into the role of PwC’s UK arm in not uncovering a failure by audit client JP Morgan to ringfence client money.