Vince Cable apologises for not declaring £6,000 donation in the form of polling

Business secretary breached rules by failing to declare donation-in-kind from former Liberal Democrat peer Lord OakeshottVince Cable, the business secretary, has been forced to apologise for failing to declare a donation-in-kind of private polling worth £6,000 commissioned by former Liberal Democrat peer Lord Oakeshott into Cable’s popularity in his constituency of Twickenham.The polling first came to light in May 2014 when it was leaked to the Guardian alongside other polls commissioned