In February, the MPC noted that shifting expectations about Brexit could mean that data in early 2019 would be volatile and might not provide a clear signal about underlying output growth. One factor that could cause such volatility is stockbuilding.
Stockbuilding occurs when a business puts finished goods or raw materials to one side to hold in reserve, or when the volume of work in progress increases. A range of survey evidence suggests that uncertainty about Brexit caused companies to increase their holdings of stocks in Q1 (Chart A).