On 10 February, Alice competed at the English Championships where she placed seventh in the all-around. She also placed fourth on vault and bars and sixth on floor. On 21 February, Alice was named to the English team for the 2018 Commonwealth Games in Gold Coast, Australia. In March, Alice competed at the British Championships. She competed in the all-around where she placed fifth with a score of 51.650. She then competed in the beam final where she won a silver medal with a score of 13.350 and also in the floor final where she placed fifth with a score of 13.000. Later on that month, Alice was chosen to compete at the Artistic Gymnastics World Cup in Birmingham to replace teammate Claudia Fragapane who had to withdraw due to injury. She won the bronze medal with a total score of 53.099 behind Russia's Angelina Melnikova and American Margzetta Frazier. In April Kinsella competed at the Commonwealth Games on all four events in the team final/individual qualifications where she won a silver medal with the English team, finishing behind Canada. She had also qualified in third for the all-around final, second for the beam final and sixth for the floor final. In the all-around final, Alice won bronze with a total score of 53.150 behind gold medal winner Ellie Black from Canada and silver medal winner Georgia Godwin from Australia. Alice competed in the beam final where she won gold with a score of 13.700. She told the BBC after her win: Alice then competed in the floor final where she placed eighth after falling on her final tumble. She scored 11.666. On 7–8 July Kinsella competed at the Heerenveen Friendly where she placed third in the team final with Great Britain, second on balance beam behind Sanne Wevers, 4th on floor, and 10th in the all-around after a fall on the beam. On 6 July Kinsella was named to the team to compete at the 2018 European Championships alongside Becky Downie, Georgia-Mae Fenton, Kelly Simm, and Lucy Stanhope. Great Britain finished fourth in team finals. On September 27, Kinsella was named to the team to compete at the World Championships in Doha, Qatar alongside Becky Downie, Ellie Downie, Georgia-Mae Fenton, and Kelly Simm. Great Britain finished ninth in qualifications and was the first reserve for team finals.
2019
In March Kinsella competed at the English Championships where she placed third in the all-around behind Amelie Morgan and Kelly Simm. She was later selected to compete at the 2019 European Championships alongside Ellie Downie, Morgan, and Simm. At the British Championships Kinsella placed fourth in the all-around, second on uneven bars, fourth on balance beam, and fifth on floor exercise. At the European Championships Kinsella qualified to the all-around final in third place behind Angelina Melnikova and Mélanie de Jesus dos Santos. She additionally qualified to the balance beam final in third and the floor exercise final in seventh. In the all-around final Kinsella finished fifteenth. During event finals she won gold on the balance beam making her the first British gymnast to become a European champion on the apparatus. She later placed seventh in the floor exercise final. In September Kinsella competed at the British Team Championships where she placed second in the all-around behind Kelly Simm and helped her club, Park Wreckin, place second. Later that month Kinsella was named to the team to compete at the 2019 World Championships in Stuttgart alongside Ellie Downie, Becky Downie, Taeja James, and Georgia-Mae Fenton. During qualifications Kinsella helped Great Britain place seventh, earning a spot in the team final and qualifying a team for Great Britain to the 2020 Olympic Games in Tokyo. Individually she qualified to the all-around final. During the team final she contributed scores on vault, balance beam, and floor exercise towards Great Britain's sixth place finish. In the all-around final Kinsella finished in twelfth place.
2020
In early February it was announced that Kinsella was selected to represent Great Britain at the Birmingham World Cup taking place in late March. However the Birmingham World Cup was later canceled due to the COVID-19 pandemic in the United Kingdom.
