Inflexion has scored a strong exit of testing and inspection business Phenna through a £1bn-plus sale to fellow private equity investor Oakley Capital.

The sale comes less than two years after Inflexion picked up Phenna through its £1bn Partnership Capital II fund, which is dedicated to minority investments.

The sale is the first exit for Partnership Capital II and the firm’s 10th exit this year, with a combined value of more than £3.5bn.

Inflexion closed its sixth flagship fund on its £2.5bn hard cap in March this year, doubling the size of its previous flagship investment vehicle.

Read more: AltAssets