Ramsey was born in Salford and played youth football at Deans Youth and Ladies FC in Eccles aged 7.[2] A year later, she was offered a scholarship at Manchester United's Centre of Excellence, but decided to stay with DYLFC for another season and was awarded the Schofield Cup as the best player across the club's 24 squads in all age groups, an award previously won by Ryan Giggs.[2] In 2010, she eventually made the switch to Manchester United.
Liverpool
As Manchester United did not have a senior women's team, Ramsey signed with Liverpool in 2017 where she would develop under the tutelage of England international goalkeeper Siobhan Chamberlain.[3] On 18 February 2018, Ramsey made her debut in a 3–0 FA Women's Cup Fifth round win against Chichester City.[4]
Manchester United
After spending a year at Liverpool, Ramsey was one of seven former Centre of Excellence graduates to return to Manchester United for their inaugural season. She was also joined by former Liverpool teammate Chamberlain.[5] On 17 February 2019, she made her professional debut as a 64th minute substitute for Chamberlain in an FA Cup fifth round game against London Bees, with the score at 2–0. Manchester United won the match 3–0.[6] She made her first league appearance for the club in a 5–0 away win against Millwall Lionesses on 28 April.[7]
Ramsey missed the start of the 2019–20 season after suffering an elbow injury in training.[8] On 11 December 2019, Ramsey made her first appearance of the season in a League Cup group stage win over Birmingham City.[9] On 24 January 2020, Ramsey signed a new contract with Manchester United and joined Sheffield United in the FA Women's Championship on loan for the rest of the season.[10] The loan was ultimately cut short due to the suspension and eventual cancellation of the remainder of the season during the coronavirus pandemic.[11] Ramsey had played in both games she was available for prior to the season ending, making her debut for the club on 26 January 2020 in a 3–0 FA Cup defeat to Birmingham City before starting in a 5–1 league victory over Blackburn Rovers.[12][13]
On 7 March 2021 she joined West Ham United on an emergency loan after first choice keeper Mackenzie Arnold sustained a knee injury.[16] After backing up Courtney Brosnan in the league, Ramsey made her West Ham debut on 18 April starting in an 11–0 victory over third-division side Chichester & Selsey in the FA Cup fourth round.[17] It was her fourth career FA Cup appearance for her fourth different team. On 24 April, Ramsey was recalled from the loan following Arnold's recovery from injury.
On 6 August 2021, Ramsey signed a new two-year contract with Manchester United before joining Birmingham City on a season-long loan.[18]
On 5 August 2022, Ramsey joined WSL side Everton on loan for the season.[19]
On 4 July 2023, Manchester United confirmed Ramsey's departure from the club.[20]
Everton
On 29 July 2023, Ramsey joined Everton permanently on a three-year deal.[21]
International career
Youth
Ramsey has been capped by England at under-17, under-19 and under-21 level.
In July 2019, Ramsey was named in the England squad for the 2019 UEFA Under-19 Championship in Scotland.[25] Ramsey played in the final game of the group stage in a 1–0 win against Germany as England were knocked out in the group stages.[26]
In March 2020, Ramsey was called up to the under-21 squad for a double-header of friendlies against France, keeping a clean sheet in both.[27][28]
Senior
In June 2021, Ramsey was called up to a senior England training camp for the first time as an injury replacement for Karen Bardsley.[29] In February 2023, she was named in the squad for the 2023 Arnold Clark Cup.[30]