Amid a resurgence in private-equity deals, BC Partners has been among the most active, taking advantage of rivals that have been unwilling or unable to pull the trigger on deals.

The London-based firm, one of the UK's largest private-equity companies, was the second-most active buyout firm in the US in the third quarter. Its investments in two big deals - which were valued at $10bn - accounted for nearly a quarter of the $36.1bn in private-equity acquisitions in that period, data provider Dealogic said.