Redditch metal firm boss James Leng says the government is "failing" businesses that need support.
The forecasts were made before the conflict in the Middle East broke out which could have a "very significant" impact, the OBR said.
There are measures, announced ahead of the chancellor's Spring Statement, yet to take effect.
Among the data and projections are key figures that shine a light on prospects for your finances.
The NI Executive is to receive an additional £380m for public services over the next three years, the Treasury has said.
Chancellor Rachel Reeves updates MPs on her plans for the economy, as the latest forecasts are unveiled.
People in their 20s and 30s tell the BBC how they feel about their finances as the chancellor delivers her Spring Statement.
Hampshire business leaders say what they'd like to see in the Chancellor Rachel Reeves's address.
A number of disability-led organisations say they are considering “stepping back” from engaging with the government over benefit cuts