Carey has been doing the role since March and has been with Three for over 13 years
Three UK has confirmed Elaine Carey as its new chief commercial officer for the UK and Ireland.
Carey has worked for Three since 2007, and has been the COO in Ireland for the past seven years.
She started her new role in March and is tasked with leading the customer and marketing teams across both businesses.
During this time she has helped Three grow its market share from one per cent up to 36 per cent.
Carey was also part of the team that oversaw the acquisition of O2 in Ireland.
She will be working closely with recently appointed CEO Robert Finnegan.
Carey will also look to drive closer ties between the UK and Irish teams for greater collaboration.
Finnegan said: “Elaine’s commercial acumen and drive for results will ensure both organisations benefit from her leadership.
“Her depth of experience as well as her extensive sector knowledge will be invaluable as we take Three Ireland and Three UK forward.”
Carey’s brief will be to grow the business, in particular around leveraging Three’s 5G investment.
The operator has the largest amount of 5G spectrum out of all four MNOs.
Commenting on her new role Carey said: “The next few years represent a huge opportunity to grow our UK business, so I am delighted to be taking on the challenge.
“I’m looking forward to bringing Three UK’s customer and marketing teams closer together, using insight and intelligence to develop propositions and campaigns that will really matter for our customers.”