LONDON, Nov 27 (Reuters) - British Prime Minister Rishi Sunak plans to promise on Monday to maintain or increase military aid to Ukraine next year, and to confront international competitors "not with grand rhetoric but with robust pragmatism".British government support for Ukraine has remained unchanged, despite turmoil in recent months as Boris Johnson was succeeded as prime minister by Liz Truss and then Sunak.However, some Conservatives view Sunak as less hawkish on China than Truss - although a planned meeting between Sunak and China's President Xi Jinping at this month's G20 summit in Bali fell through and last week London banned Chinese-made security cameras from sensitive government buildings.We will do things differently," Sunak said in an extract released by his office of his first major foreign policy speech, which he plans to deliver on Monday in London's financial district.Sunak said Britain needed to take the same long-term approach as its adversaries and competitors, who he did not name directly in the speech extracts, and that Britain should make "an evolutionary leap" in its approach to foreign policy."