There is growing concern among MPs that ministers have been evasive about the costs involved in the agreed deal. atthew Horwood/AlamyThere is growing concern among MPs that ministers have been evasive about the costs involved in the agreed deal. atthew Horwood/AlamyCost of UK’s drug price with US will come out of NHS budgetDepartment of health, not Treasury, will foot the bill – with costs forecast to reach £9bnThe cost of the government’s drug pricing deal with the Trump administration will come out of the NHS budget instead of the Treasury’s and could eventually reach £9bn a year, campaigners fear. Patrick Vallance, the science minister, has confirmed that the costs – initially an extra £1bn over three years– will be borne by the Department of Health and Social Care, which funds the NHS in England, and not the Treasury. His admission, in a letter to the Commons science, innovation and technology committee, is the first time the government has specified which Whitehall department would foot the bill. It comes amid growing concern among Labour, Liberal Democrat, Green and Scottish National party MPs that ministers have been evasive about the costs involved and risk that the NHS may have to cut services in order to pay the 25% higher prices for new drugs that ministers agreed to. The £1bn is the estimated extra cost for the first three years of the 10-year deal the government announced on 1 December.