LONDON (Reuters) – Britain plans to make “buy now pay later” (BNPL) firms carry out affordability checks, gain approval by the Financial Conduct Authority (FCA) and ensure adverts are fair and clear, the government said on Monday, in measures to regulate the sector. BNPL firms, which are unregulated, typically offer on-the-spot interest-free short-term loans that spread payments for retail goods such as clothing, and have, according to the government, rapidly increased in popularity. “Buy-Now Pay-Later can be a helpful way to manage your finances but we need to ensure that people can embrace n…