TPG Growth, the middle market and growth equity investment platform of US-based investment firm TPG, has announced the acquisition of UK-based IT recruitment business Frank Recruitment Group (FRG).

TPG Growth acquired a majority stake in FRG from its founders and UK-based mid-market private equity firm Livingbridge. Livingbridge invested in the company in 2013 to help it continue to diversify and expand globally.

"We are immensely proud to partner with TPG Growth," James Lloyd-Townshend, CEO of FRG, said. "Their leadership and foresight in the space will be crucial as we target new segments of the cloud technology market, launch new brands, strengthen our existing ones, and grow from a 700- to 2,000-person recruitment business."

In 2014, FRG launched two additional high-growth brands: Churchill Frank, which focuses on big data, and Washington Frank, FRG's incubator brand, which specializes in staffing opportunities in emerging cloud technologies.

Details of the transaction were not disclosed.