The Financial Conduct Authority has told a provider of fixed-rate investment bonds and Isas to stop marketing its products.
The regulator has not revealed why it has taken this action against London Capital & Finance PLC, but a statement on the company's website stated it is currently subject to an FCA review.
The regulator has powers to ban a financial promotion or advert that is unclear, unfair or misleading.
According to the company's website, London Capital & Finance offers a range of investments for people looking to receive "market leading returns", with its current products ranging from one to three-year fixed terms, offering up to 8 per cent annual returns.
The company has been authorised by the FCA since 2016 and over the past year it has not had any complaints upheld against it at the Financial Ombudsman Service.