Last month, in a regulatory filing, JumpTap said it had raised $20m but the repeat investors in the latest $25m round include ad services group WPP.

JumpTap, a US-based mobile advertising software provider backed by ad agency WPP, has closed its latest round at $25m.

Last month, in a regulatory filing, JumpTap said it had raised $20m but the repeat investors in the latest round include WPP; mutual fund manager AllianceBernstein; and venture capital firms Summerhill Venture, Partners, which spun out from Canada’s national telecoms company BCE in 2007, General Catalyst, Redpoint Ventures and Valhalla Partners. Several undisclosed new investors also joined.

In December, Japan-based media…