Kishida and Sunak will sign the reciprocal access defence agreement, agreed in principle last May, a month after the two countries teamed up with Italy on a new fighter jet programme.

The visit and agreement form part of Britain’s Indo-Pacific tilt in foreign policy strategy as it builds security and trade ties in the region.

“This reciprocal access agreement is hugely significant for both our nations – it cements our commitment to the Indo-Pacific,” Sunak said in a statement.

“In this increasingly competitive world, it is more important than ever that democratic societies continue to stand shoulder to shoulder as we navigate the unprecedented global challenges of our time.”

Kishida is visiting Britain as part of a tour of G7 countries including France, Italy, Canada and the US.

Japan currently holds the G7 presidency.

Downing Street said Sunak would raise the need for the group to maintain its collective support for Ukraine as the first anniversary of Russia’s invasion approaches in February.

Sunak and Kishida are also expected to discuss trade and Britain’s accession to the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP).

In December Britain and Japan also launched a digital partnership.

Sunak will meet Kishida at the Tower of London, a medieval fortress and one-time prison which houses the Crown Jewels and other treasures.

The leaders will see some Japanese armour, which was presented to King James in 1613 by Shogun Tokugawa to mark the first trade agreement between England and Japan.