UK Prime Minister David Cameron arrived in Kabul Friday on an unannounced visit for talks with new Afghan President Ashraf Ghani.

UK Prime Minister David Cameron arrived in Kabul Friday on an unannounced visit for talks with new Afghan President Ashraf Ghani, BBC news network reported.

The presidential palace and the British embassy confirmed that the visit had started, and talks were under way.

As he arrived, the top UK diplomat said Britain had gone "a long way" towards achieving its objectives there, stating that British armed forces had paid a "very high price" for their involvement in Afghanistan.

Earlier, Cameron visited RAF Akrotiri in Cyprus from where RAF Tornados are launching air strikes against militants of the so-called 'Islamic State of Iraq and the Levant' (ISIL) terrorist group in Iraq.

During the visit, Cameron and Ghani are due to discuss a crucial conference to be held in London next month which will consider future aid to Afghanistan, BBC said.

The British army has wound down its presence in the volatile southern province of Helmand after years of heavy fighting in some areas where the Taliban has launched fresh offensives in recent weeks.

Britain still has 3,900 troops in Afghanistan as part of the NATO's International Security Assistance Force (ISAF) that is expected to complete its combat mission at the end of this year, with a follow-up mission taking over in 2015 on training and assisting the Afghan army and police.