Question: Who handled the production of the number-one single from Dua Lipa's self-titled debut studio album?

Context articles: New Rules (song)
US and Europe Tour
Dua Lipa (album)
Dua Lipa
The Self-Titled Tour (Dua Lipa)
Hotter than Hell Tour (Dua Lipa)
Hotter than Hell (Dua Lipa song)
Lost in Your Light
Last Dance (Dua Lipa song)
Blow Your Mind (Mwah)

"New Rules" is a song by English singer Dua Lipa from her eponymous debut studio album (2017).
 The track was written by Caroline Ailin, Emily Warren and Ian Kirkpatrick, while production was handled by the latter.
 It was released to contemporary hit radio in the United Kingdom on 21 July 2017 as the album's sixth single.
 It impacted the same format in the United States on 22 August 2017.
The US and Europe Tour is the third official concert tour by English singer Dua Lipa.
 The tour supports her debut studio album "Dua Lipa" (2017).
 The tour began on 24 February 2017 in Chicago.
Dua Lipa is the debut studio album by English singer Dua Lipa.
 It was released on 2 June 2017 by Warner Bros.
 Records.
 The lyrical themes revolve around her personal views of love, rising above, sex and self-empowerment.
Dua Lipa ( ; ] ; born 22 August 1995) is an English singer, songwriter and model.
 Her musical career began at age 16, when she began covering songs by other artists on YouTube.
 In 2015, she was signed with Warner Music Group, and released her first single soon after.
 In December 2016, a documentary about Lipa was commissioned by "The Fader" magazine, titled "See in Blue".
 In January 2017, she won the EBBA Public Choice Award.
 Her self-titled debut studio album was released on 2 June 2017.
 The album spawned seven singles, including the top-10 single "Be the One" and the number-one single "New Rules".
The Self-Titled Tour is the fourth headlining concert tour by Dua Lipa in support of her self-titled debut album "Dua Lipa" (2017)"."
 The tour is scheduled to begin on October 5, 2017, in Brighton, England, and is scheduled to conclude on April 20, 2018, in London, England.
Hotter than Hell Tour is the second official concert tour by English singer Dua Lipa, in support of her debut studio album "Dua Lipa" (2017).
 It is named after her hit single "Hotter than Hell".
"Hotter than Hell" is a song by English singer Dua Lipa from her eponymous debut studio album (2017).
 It was written by Lipa, Adam Midgley, Tommy Baxter and Gerard O'Connell, and produced by Stephen "Koz" Kozmeniuk.
 The song was released on 6 May 2016 as the album's third single.
 "Hotter than Hell" peaked at number 15 on the UK Singles Chart, while reaching the top 20 in Australia, Belgium and the Netherlands.
"Lost in Your Light" is a song by English singer Dua Lipa, featuring American singer Miguel.
 The song was released on 21 April 2017 as the fifth single from Lipa's eponymous debut studio album.
 It was released as an instant-grat track to those who pre-ordered the song on the iTunes Store.
 The song was written by Lipa, Miguel, and Rick Nowels, while production was handled by Miguel and Stephen "Koz" Kozmeniuk.
 The accompanying music video, directed by Henry Schofield, was filmed in Los Angeles and premiered on 26 May 2017.
"Last Dance" is a song by English singer Dua Lipa from her eponymous debut studio album (2017).
 Lipa wrote the song with Stephen "Koz" Kozmeniuk and Talay Riley, with Kozmeniuk handling the song's production.
 It was released on 9 February 2016 as the album's second single.
 The track appears on the deluxe edition of "Dua Lipa".
 It peaked at number four on the "Billboard" Twitter Emerging Artists chart, spending seven weeks on it.
"Blow Your Mind (Mwah)" is a song by English singer Dua Lipa from her eponymous debut studio album (2017).
 It was released on 26 August 2016 as the album's fourth single.
 The song debuted at number 50 and peaked at number 30 on the UK Singles Chart; in the United States, it reached number 72 on the "Billboard" Hot 100, becoming Lipa's first song to chart in the country.
 It also topped the "Billboard" Dance Club Songs chart, becoming Lipa's first number-one single on that chart.