Buy-to-let landlords should to be made to "squeal" under George Osborne's crackdown to help people to buy homes, a Treasury minister has suggested.

The Residential Landlords Association said it was "shocked" by the response of the minister, during a private meeting earlier this month as it tried to raise concerns about a crackdown.

George Osborne, the Chancellor, has imposed a 3 per cent stamp duty on buy to let landlords and from next year will curb tax relief on mortgage interest.