LONDON (AFP) - Britain will withdraw 500 more troops from Afghanistan by the end of next year, taking its contingent there to 9,000 as Afghan forces become increasingly confident, Prime Minister David Cameron said Wednesday. His announcement of a modest reduction to the second largest foreign force in Afghanistan comes a fortnight after US President Obama announced a drawdown ahead of the handover of security responsibility to the Afghan govt by 2015. Cameron said Britain had taken a huge share of the burden in Afghanistan, with 375 British soldiers having lost their lives since the US-led invasion following the September 11 attacks ten years ago.