Update on HYLAS 4

16 March 2018

AVANTI COMMUNICATIONS GROUP PLC

Update on HYLAS 4

Avanti Communications Group plc ("Avanti") has been advised by Arianespace of a delay to the launch of its HYLAS 4 satellite ("HYLAS 4"), which will not have a material effect on the HYLAS 4 in-service date. Avanti anticipates a revised launch date in early April and expects to be able to confirm a fixed launch date shortly.

For further information please contact:

Avanti: Alan Harper / Nigel Fox +44 (0)207 749 1600

Cenkos Securities: Max Hartley (Nomad) / Nicholas Wells, +44 (0)207 397 8900

Montfort: Nick Miles / James Olley, +44 (0)203 770 7909

Notes to editors

Avanti connects people wherever they are - in their homes, businesses, in government and on mobiles. Through the HYLAS satellite fleet and more than 180 partners in 118 countries, the network provides ubiquitous internet service to a quarter of the world's population. Avanti delivers the level of quality and flexibility that the most demanding telecoms customers in the world seek.

Avanti is the first mover in high throughput satellite data communications in EMEA. It has rights to orbital slots and Ka band spectrum in perpetuity that covers an end market of over 1.7bn people.

The Group has invested $1.2bn in a network that incorporates satellites, gateway earth stations, datacentres and a fibre ring.

Avanti has a unique Cloud based customer interface that is protected by patented technology.

The Group has two satellites in orbit and a further two satellites under construction.

Avanti Communications is listed in London on AIM (AVN:LSE).

www.avantiplc.com