Launch partnership with Onecom on Southend network

CITYFIBRE INFRASTRUCTURE HOLDINGS PLC

('CityFibre' or the 'Group' or the 'Company')

Launch partnership with Onecom on Southend network

Onecom to become CityFibre's 50th service provider partner

CityFibre (AIM: CITY), a leading designer, builder, owner, and operator of fibre optic infrastructure in UK towns and cities, is pleased to announce the signing of a commercial launch partner agreement for its Southend-on-Sea network currently under construction.

Hampshire-based business ISP Onecom, the largest service provider in the Vodafone Partner Programme by customer connections, becomes CityFibre's 50th service provider partner, taking the Company halfway to its medium-term target of 100 service provider relationships.

The five-year, £1.7m agreement commits Onecom to a minimum of 150 business customer connections across CityFibre's network of up to 100 kilometres currently under construction in the city.

With the conclusion of today's agreement, CityFibre has now sold a total of 270 connections on the Southend asset, representing an incremental unit sales uplift of 125% above the original anchor customer commitment in only six months.

Greg Mesch, Chief Executive of CityFibre, commented:

"We're delighted to add Onecom as our 50th service provider partner relationship and our launch partner to deliver superior pure fibre connectivity solutions to the business community in Southend. Onecom's national base of over 300,000 customer connections is testament to its established reputation for quality and customer service, making it an ideal addition to the CityFibre partner universe."

The information communicated in this announcement is inside information for the purposes of Article 7 of Regulation 596/2014.

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About CityFibre:

CityFibre is the national builder of Gigabit Cities, as the UK's largest alternative provider of wholesale fibre network infrastructure. It has major metro duct and fibre footprints in 37 cities across the UK and a national long distance network that connects these cities to major data-centres across the UK and to key peering points in London.

The company has an extensive customer base spanning service integrators, enterprise and consumer service providers and mobile operators. Providing a portfolio of active and dark fibre services, CityFibre's networks address 26,000 public sites, 7,400 mobile masts, 260,000 businesses and 3.7 million homes.

CityFibre is based in London, United Kingdom, and its shares trade on the AIM Market of the London Stock Exchange (AIM: CITY). Further information on the company can be found at www.cityfibre.com