Drug firm Aspen Pharmacare has offered to pay the U.K.’s National Health Service (NHS) £8 million (U.S. $9.7 million) as part of a deal with the country’s competition regulator following suspicions that the company paid rival firms to delay marketing a vital medicine so it could retain its market dominance.

It is the first time the regulator has secured a direct payment for the NHS as a result of anti-competitive behavior by one of its drugs suppliers.

Neil Hodge is a freelance business journalist and photographer based in Nottingham, United Kingdom. He writes on insurance and risk management, corporate governance, internal audit, compliance, and legal...