She rose to fame in 2008 as a member of five-piece girl group The Saturdays, who are signed to Fascination and Polydor Records.

While Healy was engaging in a television career she was also writing and recording her debut album, switching to a country music-influenced style as opposed to the pop and dance material performed by The Saturdays.

She went on to study nursing and then primary teaching at Mary Immaculate College, but finally decided to pursue her music passion at 23 years old.

[6] Healy began her music career playing guitar and singing in pubs and clubs around Ireland, solo and in bands.

[10] Whilst Healy was slowly finding success in her native Ireland as an indie solo artist, she felt she did not have a firm direction in her career.

In mid-2006, she recorded and released her first extended play, entitled Sorry, from which the track "Had It with Today" was re-recorded as the B-side of the Saturdays' single "Higher",[11] which she self-produced.

[12] In 2008, Healy wrote, produced and performed on the soundtrack to Christian Blake, written and directed by Eoin Macken.

[14][15] The girl group released their debut single "If This Is Love" in July 2008, and it peaked at number eight in the UK.

[16] The group released a second single "Up" which charted at number five in the UK[16] and later the song was given a Silver Disc in the United Kingdom.

In October 2009, the group released a second studio album, Wordshaker, which charted at number nine and was given a silver certification by the BPI.

Network broadcast Chasing The Saturdays, a reality TV show following the girls during their three-month stay in America.

Healy's first solo endeavour away from the group was when RTÉ selected her to present her own television programme, entitled Una's Dream Ticket.

[26] The winners of the show would receive a grand prize of £100,000, with Healy's aim as a judge is to find groups with the best technique and skill and creativity.

[29] In 2014, Healy was announced as a contestant on the second series of UK version of diving competition, Splash!.

[32] She said that her children inspired her in many different ways creatively when she began to write the album, and that she wanted to continue to record and perform music to help support them in the life they deserved.

[32] She said she wrote "Stare at the Moon" about her eldest child, Aoife Belle, for she knew all the words to the band's songs.

[32] It was reported in early 2016 that Healy had recorded a track with Nashville star Sam Palladio.

[33] It was also announced that she had been working with Sacha Skarbek, Amy Wadge and Ben Earle from country music duo The Shires.

[35] This led to Healy being asked to become a judge on the fourth series of the show starting in January 2015, alongside Kian Egan, Bressie and Rachel Stevens.

[37] In April 2016, Healy revealed her album would be influenced by country and indie-inspired music, and "Staring At the Moon", the song she wrote for her daughter would be performed live on the semi-final of The Voice of Ireland.

[38] Healy was the winning judge on the fourth series of The Voice of Ireland when the act she mentored, Patrick James, won the show.

The shoe range was decided and developed by Healy herself in collaboration with a team of industry professionals.

[47] In 2020, Healy was part of an Irish collective of female singers and musicians called "Irish Women in Harmony", that recorded a version of Dreams in aid of the charity SafeIreland, which deals with domestic abuse which had reportedly risen significantly during the COVID-19 lockdown.

[49] In 2021 she co-hosted an Irish music show on RTÉ One, The Heart of Saturday Night, with Loah.

"[51] Healy married Rugby Union fullback Ben Foden on 30 June 2012 in her native Ireland.