A post by @FirstSquawk on X.

The UK government’s security team is investigating a possible leak of budget plans that could have moved financial markets, according to a First Squawk report. The review centers on whether budget details reached markets before their official release, though the report did not specify which measures, assets or time frame were involved. The scrutiny matters because early disclosure of fiscal plans can shift pricing across gilts, sterling and UK equities before all investors can react. What to watch next is whether the investigation identifies the source and timing of the leak, and whether any market moves are reassessed as having been driven by premature information.