Australia wants Britain to spend more aid money in the Pacific as the region's island nations battle climate change.
Foreign Minister Julie Bishop is at the Commonwealth Heads of Government Meeting in London, where she is urging the United Kingdom to move its aid money post-Brexit to islands in the Pacific.
"My point is that the United Kingdom, separate from the EU, will have an opportunity," she told reporters on Tuesday.
"The United Kingdom is already talking about expanding its diplomatic footprint in the Pacific."
Ms Bishop said in a meeting with leaders from Pacific nations they raised the issue of climate change and rising oceans, and Australia had pledged to work with them.
International Development Minister Concetta Fierravanti-Wells said on Monday that polling showed Australians were opposed to foreign aid, and more needed to be done to tell them about its benefits.
"As far as Australia is concerned, we deliver an aid budget that is affordable and is targeted," Ms Bishop said.
"And the majority of our aid is invested in the Pacific now and will continue to be so while ever I'm the foreign minister."
When asked if Australia would lift its own aid funding, Ms Bishop said to wait until this year's federal budget.