New Zealand Prime Minister Jacinda Ardern on Friday made her first visit to the UK since both countries signed a free trade agreement, meeting with British Prime Minister Boris Johnson to boost bilateral ties and discuss Russia's war in Ukraine.

The trip came after both leaders attended the NATO summit in Madrid. They will also discuss security challenges facing the Indo-Pacific region.

It was Ardern's first visit to the UK since the start of the coronavirus pandemic. New Zealand had enacted a strict border policy at the outset of the pandemic and only recently reopened its borders to international visitors.

She said at Johnson's No. 10 Downing St residence that it was an “incredibly important milestone for us in New Zealand” that she was able to visit Europe, adding that it signified “we are open for business, for trade, for tourism”.

Ardern also said the meeting was an opportunity to discuss how the UK and New Zealand have responded to Russia's war in Ukraine.

“We have also provided our military aid via our partnership with you,” she told Johnson, who in turn praised her for “the very strong line that you take on Ukraine”.

They are further expected to discuss tackling online disinformation and deepening bilateral trade ties as well as agree on new measures to boost the two countries' ties in scientific research.

The UK and New Zealand signed a free trade agreement in February following a similar deal with Australia in late 2021.

Johnson said the agreement slashes red tape, cuts tariffs on exports and creates opportunities for British businesses to travel and trade. But British farmers have said eliminating tariffs for agricultural products would expose sectors like beef, lamb and dairy to unfair competition.