UK markets just gave us a mini rollercoaster moment. Sterling and government bonds experienced a brief spike following surprisingly optimistic forecasts from the Office for Budget Responsibility, only to quickly reverse course. The OBR's updated economic projections initially injected confidence into traders, pushing both the pound and gilts higher. But that enthusiasm didn't last long—within minutes, both assets retreated, suggesting the market needed more convincing evidence before committing to a sustained rally. This whipsaw action reflects the ongoing uncertainty surrounding Britain's fiscal outlook and economic trajectory. Investors remain cautious despite positive headline numbers, weighing growth forecasts against persistent inflation concerns and global economic headwinds.