Bridgepoint private equity has bought political monitoring company DeHavilland from information and events company Ascential Plc which has also recently divested the Glenigan building information and Groundsure environmental data businesses from its portfolio. London-based Bridgepoint paid £15m in cash for the business. Ascential has raised almost £260m from three disposals. DeHavilland was established in 1998 and provides PR executives and lobbyists with political insight. The former Emap Plc had bought a 72% stake in DeHavilland in 2005, reportedly for £13m.