MI London

By 2019, it had been announced that there would be a Hundred franchise affiliated to Surrey and Kent. The home ground was also established as the Oval, despite rumours that Surrey's decision to vote against the Hundred's new playing conditions had led Colin Graves to threaten to take away their hosting rights. However, as late as May 2019, the franchise's name was still undecided.

After previous speculation that teams would have no geographical element, it was now suggested the Oval franchise would contain the word "London", like the Lord's-based London Spirit. In June, The Times contradicted this rumour, reporting that the team would be called the Oval Greats, after several other ECB proposals – London Fuse, London X, London Union and London Rebels – had been rejected. All such notions were disproved in July when the team's name was announced as the Oval Invincibles.

In August 2019, the side announced that Australian coach Tom Moody would be the men's team's first coach, while former England Women player Lydia Greenway was appointed coach of the Women's team. The inaugural Hundred draft took place in October 2019 and saw the Invincibles claim Sam Curran as their headline men's draftee. He was joined by Surrey and England teammates Tom Curran and Jason Roy, along with five other Surrey players.

Laura Marsh was the women's marquee signing, alongside Fran Wilson. The first season did not take place until 2021 due to the COVID-19 pandemic. The women's team immediately achieved success by winning the first women's Hundred title.

They retained the title the following year, beating Southern Brave in the final for the second consecutive time. Having finished in mid-table for the first two seasons, the men's side saw a significant change of fortune in 2023. They won their first title in their third season, beating Manchester Originals in the final.

They retained the title in 2024 with victory over Southern Brave, and won it a third time in 2025 by defeating Trent Rockets. This run of success means either the women's or men's team have won a title in every edition of the Hundred to date. As part of the 2025 Hundred sale, the ECB granted Surrey County Cricket Club a 51% stake in the franchise, with the remaining 49% sold through an auction process.