From 1h ago OBR raised concerns with Treasury about pre-budget leaking before budget took place, MPs told Hillier started by asking about the letter sent by the OBR to the Commons Treasury committee on Friday explaining what the OBR told the Treasury in the run up to the budget about its forecasts. Prof David Miles said the OBR decided to send the letter because there were a lot of misconceptions about the role played by the OBR this time. He said the letter was meant to be published on budget…