Finbarr O’Connell and Colin Hardman of Everlyn Partners LLP, who were appointed as administrators in June, announced the completion of the sale on Thursday 24 August.
Breal said the Brew By Numbers taproom at Morden Wharf in Greenwich will continue trading as normal with “minimal disruption”.
Hardman said the brewing sector had seen “widespread pressure” in recent years due to the pandemic, post-Brexit complexity of export paperwork, increased material costs, reduced discretionary spending and changes to beer duty.
He added: “This has resulted in numerous microbreweries being forced to close in recent years.
“It therefore comes as no surprise that the latest SIBA (Society of Independent Brewers) Craft Beer Report noted that 63% of its members said their business priority is survival.
“We are therefore even more delighted to have rescued this pioneering and much-loved brand. We want to thank all the key stakeholders including staff, financiers and critical suppliers for helping make this happen.”
Brew by Numbers was founded in in 2011, with the original brewery and taproom on Enid Street in Bermondsey, before production moved to the Greenwich site, adding a 400-person capacity taproom and outdoor space on the banks of the River Thames.
O’Connell described the acquisition as the “best outcome” for creditors and said it would preserve employment while “maintaining trade”.
“We thank our advisers, especially our lawyers, Gowlings, and all the employees for their support in this process.
“We will be continuing to work with the new owners to ensure a smooth transfer of operations”, O’Connell continued.
Breal stated it would maintain its strategy of brewery acquisitions, after concluding deals for Yorkshire-based Black Sheep Brewery and Peckham-based Brick Brewery earlier this year.
The private equity firm also acquired London-based wine bar group Vinoteca this week.
A spokesperson for Breal said the brand would add “considerable value” to its “brewing family” and wider product offerings.
The spokesperson added: “We are excited to be onboard with Brew By Numbers. They have a unique, well established product range, and equally well-known brand.”