Headquartered in London[3] and with a secondary office in Sheffield, XLN supports its customers through several call centers.

XLN began in 2002 when founder, Christian Nellemann,[4] identified a gap in the market for a telecoms provider that focuses on small businesses.

Nellemann started selling business telecoms door-to-door, and after building up a customer base expanded the product range to include card processing, energy, and fibre broadband.

In 2008, Nellemann led a management buyout of XLN with Palatine Private Equity and again in 2010 when ECI Partners acquired a majority stake in the company.

The basic package provides line rental and free online account management and support, while the Max package includes extras like mobile minutes and unlimited UK landline calls.