Question to the HM Treasury:

To ask the Chancellor of the Exchequer, whether was she informed by the Office for Budget Responsibility in advance of the (a) Autumn Budget 2024 and (b) Spring Statement 2025 that it was likely to conduct a review of productivity forecasts at a forthcoming fiscal event.

The OBR regularly reviews its forecast assumptions. As set out in its latest annual Forecast Evaluation Report, published in July 2025, the OBR noted that they are "currently conducting our regular summer supply stocktake, which involves research into our potential output forecast and its components."

As the Government’s independent official forecaster, the OBR has full discretion over the judgements underpinning its forecasts.