A major estate agent has written to George Osborne ahead of next week’s Budget, criticising the Chancellor’s tax plans.

Andrew Grant, who is also president of Worcester’s Conservative Association, told Osborne he is jeopardising “the backbone of the Conservative party” by levying too many taxes on the middle classes.

In his letter, Grant called property taxes counterproductive and “very concerning”.

He said: “In the case of increased Stamp Duty on buy-to-lets and second homes . . . it all seems to be part of a tax on the middle classes.”

Grant also told his local paper: “When the higher duty kicks in, rents will go up and that’ll make it even harder for people to get on the ladder.

“I’ve told him exactly what I think about it.”