An Australian court has upped a £1 million fine on British company Reckitt Benckiser to £3.5 million for misleading consumers about the effectiveness of the popular painkiller Nurofen.

The UK's advertising watchdog is investigating claims made by the makers of Nurofen after an Australian court ordered the company to stop selling several versions of the popular painkiller.

An Australian court has ordered Nurofen’s UK owner to stop selling several versions of the popular painkiller that were identical to its standard ibuprofen pills but nearly twice as expensive.