The former finance chief at Tullett Prebon, and one of the key players in the interdealer broker's billion-pound deal for Icap's voice broking business, has reemerged at an online trading platform.

Paul Mainwaring, who for nearly a decade was group finance director at Tullett before his departure earlier this year, will join IG Group on July 11 as its chief financial offer, the firm said in a statement on July 8.