Foreign Minister Penny Wong and Defence Minister Richard Marles will host their UK counterparts, David Lammy and John Healey, in Sydney for regular joint talks on Friday.
Australian Strategic Policy Institute senior analyst Alex Bristow said that holding ministerial meetings on a six-monthly cycle, rather than the traditional annual timeline, highlights strengthened ties between the two nations.
"The tempo of it increasing, I think, is a signal that Britain is moving into an elite category," he told AAP.
The UK was probably third behind Japan and the US in terms of how strategically significant the defence relationship was to Australia, Dr Bristow said.Â
In a joint statement, Mr Marles and Senator Wong said the Australia-UK Ministerial Consultations, or AUKMIN, talks were critical to the two nations' shared interests.
"We continue to work closely together, including through the AUKUS partnership, to address shared strategic challenges in an increasingly complex and uncertain world," Mr Marles said.
"We take the world as it is - but together, we are working to shape it for the better," Senator Wong said.
Meanwhile, the UK's Carrier Strike Group, led by the Royal Navy flagship HMS Prince of Wales, arrived in Darwin on Wednesday in the midst of the Talisman Sabre multi-nation military exercises being hosted by Australia.
It's the first UK carrier strike group to visit Australia since 1997.
The international task group includes five core ships, 24 jets, and 17 helicopters, centred around the flagship aircraft carrier.
On Sunday, Mr Marles and Senator Wong will join their counterparts in Darwin, where the UK Carrier Strike Group will dock.
UK High Commissioner to Australia Sarah MacIntosh said the arrival of the strike group was a demonstration of commitment to the region and the strong relationship with Canberra.
"This is an anchor relationship in a contested world," she said.
Dr Bristow said Australia should be welcoming carrier strike groups from European countries.
He said NATO had identified China as a threat to its interests as Beijing continues to collaborate with Russia and North Korea.
"It's entirely in the interests of European allies in NATO to be working with Indo-Pacific allies," Dr Bristow said.
The US has promised to sell Australia nuclear-powered submarines under the AUKUS agreement, which has since been put under review by the Trump administration.
The three-nation pact, which includes the UK, will be discussed during the high-level AUKMIN talks in Sydney.
Foreign Secretary Mr Lammy and Defence Secretary Mr Healey are expected to reinforce the UK's support for AUKUS.
Defence analysts believe a likely outcome of the US review will be a request for more money from Australia to support its submarine industrial base.
The Australian government has said it remains confident in the nuclear-submarine deal being delivered.
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