British finance minister Rachel Reeves began a visit to China on Saturday, seeking to revive dialogue with the world's number two economy as UK borrowing costs soar.

Reeves, whose formal title is Chancellor of the Exchequer, is the most senior British government official to visit China since then-prime minister Theresa May held talks with President Xi Jinping seven years ago.

Reeves's trip comes as the yield on UK government bonds reached a 17-year high this week, further complicating the ruling Labour Party's sputtering efforts to revitalise growth.

The increase makes it more costly for the government to finance current operations and repay debt, raising risks it will have to make spending cuts or hike taxes.

Reeves on Saturday acknowledged "moves in global financial markets over the last few days", but said the fiscal rules she set out in her October budget were "non-negotiable".

"Growth is the number one mission of this government, to make our country better off," she said at British bicycle-maker Brompton's Beijing showroom.

"That's why I'm in China, to unlock tangible benefits for British businesses exporting and trading around the world," she said.

Reeves faced pressure from the parliametary opposition to stay home to address the financial crisis, but a spokesperson for Prime Minister Keir Starmer said she was not planning on cancelling her "long-standing" China trip.

She is expected to meet her Chinese counterpart, He Lifeng, for economic and financial talks later Saturday.

They may seek to revive long-suspended annual trade and investment dialogue and discuss avenues for cooperation, potentially including financial services.

China's foreign ministry said Friday that the two sides would "open discussions on macroeconomic policy and economic globalisation, trade and investment, industrial cooperation, financial market development and cooperation on financial regulation".

"China and the UK strengthening economic and financial cooperation accords with the two countries' interests... and will add certainty and inject new momentum into the development of the global economy," ministry spokesman Guo Jiakun said at a regular news briefing.

REALISTIC APPROACH

The governor of the Bank of England and the chief executive of the UK's Financial Conduct Authority are also taking part in the visit.

In a sign of the thorny nature of ties, a Starmer spokesperson said ...