Founded over 25 years ago, GK Telecom is one of the UK’s leading SIM distribution businesses, with a strong presence across prepaid, SIM only (SIMO), and pay monthly mobile services.

Originally established in the calling card sector, GK Telecom expanded into prepaid SIM distribution in 2004 and today works closely with major UK mobile networks and MVNOs, distributing large volumes of SIMs nationwide through an extensive retail footprint.

eROAMING eSIM is a sister company to GK Telecom, led by the same directors, and extends this experience into next generation global connectivity by delivering international eSIM solutions for travellers and businesses.

Phonecheck is a leading provider of automated device testing, grading and certification solutions for the global secondary mobile market. Trusted by refurbishers, retailers and trade-in operators worldwide, Phonecheck delivers fast, accurate and standardised diagnostics across smartphones and tablets.
Its cloud-based platform verifies device functionality, carrier lock status and history, while secure data wipe and certification tools help partners maximise resale value, improve operational efficiency and build consumer trust. With scalable technology and global adoption, Phonecheck plays a key role in supporting transparency and growth across the circular mobile economy