The U.K. government on Monday laid out proposals to bring short-term loans under formal rules as it looks to clamp down on the “wild west” of the buy now, pay later sector.

Fintech firms like Klarna and Block’s Afterpay have flourished by offering interest-free financing on everything from fashion and gadgets to food deliveries — while at the same time stoking concerns around affordability. The space is highly competitive, with U.S. player Affirm launching in the U.K. just last year.

City Minister Emma Reynolds said in a statement Monday that the U.K.’s new rules were designed to tackle a sense of “wild west” in the buy now, pay later (BNPL) space, adding the measures “will protect shoppers from debt traps and give the sector the certainty it needs to invest, grow, and create jobs.”

Under the U.K. proposals, BNPL firms will be required to make upfront checks to ensure people can repay what they borrow and make it easier for customers to access refunds.

Consumers will also be able to take BNPL complaints to the Financial Ombudsman, a service created by the U.K. Parliament to settle disputes between consumers and financial services firms.

The rules are expected to come into force next year, according to the government.

Klarna said it has long supported calls to bring BNPL into the regulatory fold. “It’s good to see progress on regulation, and we look forward to working with the FCA on rules to protect consumers and encourage innovation,” a spokesperson for the company told CNBC via email.

“Regulation will give clarity and consistency to the sector, establishing a consistent operating environment and compliance standards for all providers,” spokesperson for Clearpay, the U.K. arm of Afterpay, said in an emailed statement.

“It will also create a more sustainable foundation for the future of BNPL as it continues to grow as an everyday payment option for consumers.”

While buy now, pay later firms have publicly expressed support for regulation, many were concerned about regulators applying outdated rules to their business models. The Consumer Credit Act, which regulates lending and borrowing in the U.K., has existed for over 50 years.

For its part, the government said it plans to adapt the Consumer Credit Act to allow for a “modern, pro-growth framework that reflects how people borrow today.”

WATCH: CNBC’s full interview with Affirm CEO Max Levchin

China’s retail sales growth slowed in April, data from the National Bureau of Statistics showed Monday, signaling that consumption remains a worry for the world’s second-largest economy.

Retail sales rose 5.1% from a year earlier in April, missing analysts’ estimates of 5.5% growth, according to a Reuters poll. Sales had grown by 5.9% in the previous month.

Industrial output grew 6.1% year on year in April, stronger than analysts’ expectations for a 5.5% rise, while slowing down from the 7.7% jump in March.

Fixed-asset investment for the first four months this year, which includes property and infrastructure investment, expanded 4.0%, slightly lower than analysts’ expectations for a 4.2% growth in a Reuters poll.

The drag from real estate worsened within fixed asset investment, falling 10.3% for the year as of April.

The urban survey-based unemployment rate in April eased to 5.1% from 5.2% in March.

The data came against the backdrop of trade tensions between China and the U.S.

U.S. President Donald Trump placed tariffs of 145% on imports from China that came into effect in April. Beijing retaliated with tariffs in kind, with 125% levies on American imports.

Trade-war fears have receded after a meeting of U.S. and Chinese trade representatives in Switzerland earlier this month led to a lower set of levies between the world’s two largest economies.

Beijing and Washington agreed to roll back most of the tariffs imposed on each other’s goods for 90 days, allowing some room for further negotiation to reach a more lasting deal.

That prompted a slew of global investment banks to raise their forecasts for China’s economic growth this year while paring back expectations for more proactive stimulus as Beijing strives to reach its growth target of around 5%.

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