A upgrade to IT systems at Morrisons have caused significant delays to supplier payments.

The failure to process invoices was blamed on IT infrastructure upgrades. Morrisons have issued a statement, saying: “We have experienced a temporary issue with our new computer system. But all payments should now be going through to suppliers."

The upgrades are believed to be part of a £200 million upgrade of core systems, including product management and online services along with the affected supply chain payment services.

Upgrades can often prove a risk to ICT services with many major companies including Apple, the NASDAQ stock market and Natwest all suffering from having services affected by failed upgrades.