Hemp grew up inNorth Walsham, Norfolk, where she attended Millfield Primary School and North Walsham High School. In high school she played for the girls' and boys' teams, and the girls' team won the County Championship.[2] She took an interest in football at a young age and started playing for local club North Walsham Youth FC as one of only two girls on the team.[3]
Her youth career started in 2008 atNorwich City where her sister Amy also played. Her sister had to stop playing after seriously injuring both knees.[3] Hemp joined North Walsham U16 boys while simultaneously playing with Norwich.[4] Hemp played her final game for Norwich in 2015 but continued her association with the club during the 2015–16 season playing for the Norwich City Elite Boys team.[5] The girls' centre closed down, so she joined the boys' team again.[6] When she was 17 she continued to train at the Boys’ Elite Player Development Centre.[7][8] As part of the "Where Greatness Is Made" campaign, a plaque honouring Hemp was installed at North Walsham Youth.[9]
In 2016, after leaving Norwich City, Hemp joinedBristol City.[10] On 10 September 2016, she made her senior debut for the Vixens and scored the team's third goal in a 4–1 win overWatford.[11] On 19 March 2017, she made her firstFA Women's Cup appearance, scoring two goals in a 5–0 win overMillwall Lionesses.[12] In the 2017Spring Series, Hemp made a total of four appearances, scoring one goal. In April 2018, she was namedPFA Women's Young Player of the Year.[13][14] She finished the 2017–18 season with nine goals in 24 appearances in all competitions.
In the2021/22 season she was used in all 22 league games and was the fourth best goalscorer in the league with ten goals.[18] She was named to the WSL Team of the Year for 2021/22 while Manchester City won theConti Cup.[17]
She signed a two-year extension with the club on 9 January 2022.[19] Two weeks later she scored the club's 700th goal.[20] She missed a month of playing in November 2022 with a thigh injury.[21] She won PFA Women's Young Player of the Year for the fourth time in 2022.[22] In the2022/23 season, Hemp totaled 28 appearances in all competitions and had 21 goal involvements.[17]
On 9 December 2023, when Manchester City was behind 1–0 to Aston Villa, Hemp scored a brace to give her team a 2–1 victory.[23] She scored in the 2–1 win againstEverton on 2 March 2024 to put Manchester City at the top of the table.[24]
On 26 April 2024, Manchester City announced Hemp’s three-year contract extension until 2027.[25] In September 2024, Hemp was nominated for theBallon d'Or alongside fellow England internationalsLauren James andLucy Bronze.[26]
Hemp scored her 50th WSL goal in a 2–0 win againstWest Ham United on 6 October 2024, becoming the youngest player to reach that milestone.[27] That same month, she was voted both WSL Player of the Month and the PFA Fans' Player of the Month.[28][29] On 8 November 2024, she provided three assists during City's 4–0 home victory againstTottenham Hotspur.[30] Hemp underwent surgery on a knee injury in November 2024, missing five months of the season as a result.[31] She made her return during Manchester City's 1–0 win overLeicester City on 27 April 2025.[32]
In January 2020, Hemp was named byUEFA as one of the ten most promising young players in Europe.[40] On 30 November 2021, she scored her first four goals for England, in a national record20–0 win overLatvia.[41] In June Hemp was included in the England squad which won theEuro 2022.[42][43] She played in all six games.[44] During the final it was Hemp's corner that was pressed home by teammateChloe Kelly to create the winning second goal in front of over 87,000 spectators.[45]
Although usually a winger, Hemp was played in the number 9 (striker) role when England played theUSA in afriendly atWembley on 7 October 2022. The experiment paid off for managerSarina Wiegman with Hemp scoring within the first 10 minutes in a 2–1 England victory.[46]
During the2023Finalissima victory for England, Hemp was knocked on the nose and wore a protective face mask in subsequent games.[47]
On 31 May 2023, Hemp was named to the squad for the2023 World Cup in July 2023.[48] Hemp scored a goal in England's 6–1 defeat ofChina.[49] In the quarter-final tie againstColombia, Hemp scored England's equaliser in first half added time as England won 2–1.[50] In the semi-final, Hemp scored the second and assisted for the third as England defeatedAustralia 3–1 to reach the team's first ever World Cup final.[51]
Assisting both goals in the 2–1 victory againstFrance on 4 June 2024, Hemp helped her teamqualify forUEFA Euro 2025.[54] On 6 June 2025, she was named in England's squad for the tournament itself.[55] Hemp started in thetournament's final on 27 July 2025, helping England to a 1–1 (3–1 on penalties) win overSpain while winning praise for her individual performance.[56][57]
As of 2023, Hemp has been in a relationship with fellow footballer, Sheffield United midfielder,Ashley Hodson. Hemp enjoys building Lego in her spare time.[58] In March 2023, a 7-metre (23 ft) high mural of Hemp was unveiled on the side of a cafe in her hometown ofNorth Walsham. It was painted by a street artist to honour her achievements.[59] Hemp is also an avidcricket fan, having played for her county as a teenager.[60] Hemp was appointedMember of the Order of the British Empire (MBE) in the2024 New Year Honours for services to association football.[61]