Earnings figures for the three months to July are used for the yearly increase.

The policy has been a success, but economists have raised questions around its fairness and its sustainability.

The firm will restart production on 24 September but industry sources warn the impact could last longer.

Official data shows the number of people who received winter fuel payments after now-reversed government cuts.

Trump is trying to oust Cook from her role as part of a standoff between the president and the US central bank.