• GBP/USD scales higher amid some repositioning ahead of key central bank event risks. 
• The BoE and the Fed are due to announce their respective policy decision later today. 
• The fundamental backdrop warrants caution before placing bullish bets around the pair.

The GBP/USD pair attracts some buyers during the Asian session on Thursday and moves away from its lowest level since mid-August, around the 1.2835-1.2830 region touched the previous day. Spot prices now look to build on the momentum beyond the 1.2900 mark as the market attention shifts to key central bank event risks. 

The Bank of England (BoE) will announce its policy decision later today and is widely expected to lower interest rates for the second time this year on the back of slowing inflation. That said, expectations that UK Finance Minister Rachel Reeves' first budget would boost inflation, and cause the BoE to cut interest rates more slowly, offering some support to the British Pound (GBP). This, along with a modest US Dollar (USD) downtick, turn out to be key factors pushing the GBP/USD pair higher. 

However, any meaningful USD corrective slide, from a four-month top touched on Wednesday, seems elusive amid optimism about higher growth and inflation under Donald Trump's second presidency, which could reduce the pace of interest rate cuts. Hence, the outcome of a two-day Federal Open Market Committee (FOMC) policy meeting, along with Federal Reserve (Fed) Chair Jerome Powell's comments at the post-meeting press conference will play a key role in influencing the USD.