Fonix PLC is a United Kingdom-based company specializing in mobile payments, messaging, and managed services for sectors including media, charity, gaming, e-mobility, entertainment, transport, and digital brands. Founded in 2006 and headquartered in London, it operates as the leading specialist and largest SMS and carrier billing mobile aggregator in the UK, processing over £294 million in payments and facilitating more than 1.1 billion consumer interactions annually. The company provides carrier and SMS billing, voice services, payment APIs for mobile-operated payments, checkout services, campaign manager platforms, messaging APIs for SMS delivery, and user verification tools, enabling frictionless monetization of customer relationships and real-time consumer interactions through its communications platform as a service (CPaaS). Fonix PLC supports high-profile clients like ITV, Bauer Media, Comic Relief, and Global, powering payments across the UK, Ireland, Austria, Germany, and Portugal with a team of around 50 employees led by CEO Robert Weisz. Listed publicly since October 2020 after rebranding from Fonix Mobile PLC, it plays a key role in the technology sector's software infrastructure, focusing on innovative mobile operator payments and telephony solutions.