The cable networks in the cities of Dublin, Galway and Waterford and the MMDS services for towns in those counties as well Mayo were operated by NTL Ireland.

The company was formed in 2000 following the buyout of CMI (Cable Management Ireland) by Irish Multichannel (an offshoot of Princes Holdings Limited).

On 12 December 2005 Liberty Global Europe completed its acquisition of NTL Ireland, the country's other major cable operator.

The two companies were soon integrated into one business called Chorus NTL, later adopting Liberty Global's UPC brand.

Chorus lost significant market share to Sky who launched their digital satellite service in Ireland in the early 2000s.

Following the formation of the unified company, over €130M was spent on network infrastructure, including fibre and microwave links between regions.

Some areas which could receive MMDS from Irish Multichannel also had cable inherited from CMI, resulting in a choice of services, often one analogue and the other digital.

The future looked bleak for their MMDS operations after BBC and ITV services went free to air on satellite.

Outside of Cork, the company carried the basic channel pack on all analogue cable links unencrypted to save on decoder equipment.

NTL also own the remaining MMDS licences (for cells covering counties Dublin, Galway, Mayo, and Waterford).

It is assumed that Liberty will merge NTL and Chorus, under their UPC (for television) and Chello (for internet) brands, and continue to consolidate their network.

The company formed to acquire the network from Morgan Stanley is "UPC Ireland N.V.", fuelling speculation this will be the eventual name.

From December 2006, Chorus began running NTL Ireland's customer service from Limerick, in line with UPC's merger of the two companies.