Yngve Slyngstad, chief executive of Norges Bank Investment Management, said anti-corruption measures were important to reduce the risk of investmentsNEIL HALL/REUTERS

The world’s biggest sovereign wealth fund has called for the companies in which it invests to make fighting corruption a priority.

Norges Bank Investment Management, an arm of the Norwegian central bank which manages the $1 trillion fund, said companies should publish their anti-corruption efforts and have formal whistleblowing procedures in place that are separate from the line of command within the business.

The fund holds shares in many of Britain’s biggest companies and so its stance on any corporate governance issue is significant for UK plc.

Last year the fund said that it could dump its shares in oil and gas companies because of the risk of a fall in the price of fossil fuels, sending jitters through the sector.

The fund, which uses…