Isis Asset Management's socially responsible investment team is boosting its campaign to tackle bribery and corruption at some of the world's biggest companies.

According to Karina Litvack, head of governance and socially responsible investment, an effective anti-corruption policy is integral to good corporate governance. Among the 81 companies targeted by Isis during the second quarter were Carrefour, Deutsche Telekom, Exxon Mobil, HSBC and Standard Chartered.