Flexball razor

Shares in Procter & Gamble tumbled almost 6% to $85.15 this week as the multinational warned of a challenging outlook for 2015 given the strong US dollar.

P&G posted dismal second quarter results, with profits falling 31% to $2.37bn (£1.57bn). The devaluation of major currencies against the dollar, particularly the collapse of the Russian rouble, also hit sales, which fell 4.4% to $20.16bn in the three months to 31 December.