Coffee prices continue to move up as a result of weather problems in Brazil. At £2,627/t, Arabica is now 31.7% more expensive than a year ago. Brazil - the world’s largest producer of Arabica - experienced some of the driest weather in decades at the start of 2014, which affected local coffee production.

Aluminium prices are up 1.2% month on month because the London Metal Exchange has put on ice its reform plans to cut queues at its global warehouse network.

Gas prices continue to fall because of the recent warm weather in the UK, while tea is down thanks to good supply from Kenya. Palm kernel oil prices are down month on month due to lower demand, particularly from China.