A former banking analyst from Crédit Agricole has told a London tribunal that she heard colleagues talk about prostitutes and drugs and saw them exchange pornography while working on the trading floor.

Nadia Moukaideche, who worked as an analyst within the French bank's middle office in London from 2014 to 2016, has lodged a claim for sexual discrimination and harassment, asking for £79,500 in compensation, according to documents made available at an employment tribunal on Tuesday.