The laboratory testing company Intertek has become the latest FTSE 100 business to agree to a takeover, backing a £10.6bn approach from a private equity firm owned by Sweden’s billionaire Wallenberg family.

After rebuffing three previous approaches , Intertek’s board said it was “minded to recommend” the £60-a-share tilt from the Swedish buyout firm EQT to shareholders, if there is a firm offer.

The deal is worth £10.6bn including debt, or £9.4bn without. The previous bids were pegged at £58, £54 and £51 a share. Intertek shares jumped almost 7% to £56.65 on Wednesday morning.

Other FTSE 100 companies to have accepted multibillion-pound offers this year include the insurer Beazley and the fund manager Schroders .

EQT was founded in 1994 as a spinout from Investor AB, the industrial holding company of the Wallenberg family. Its motto is “More than capital”, reflecting the Wallenbergs’ declared philosophy of responsible ownership.…