The short answer
GBP/USD — nicknamed "cable" — is driven mainly by the Bank of England versus the Fed. When the BoE is more hawkish relative to the Fed, the pound tends to strengthen and cable rises; when the Fed leads, cable falls. The pound is also sensitive to UK inflation and growth data and to risk sentiment, which can make it more volatile than EUR/USD.
What GBP/USD is
GBP/USD is the price of one British pound in US dollars, nicknamed "cable" after the transatlantic telegraph cable that once carried its quotes. It is a major pair, heavily traded and liquid, though typically a touch more volatile than EUR/USD.
The main driver: BoE vs Fed
As with every pair, the dominant force is relative monetary policy — here, the Bank of England versus the Fed. When the BoE is more hawkish than the Fed, the pound is supported and cable tends to rise; when the Fed is more hawkish, cable tends to fall.
One BoE detail worth knowing: its rate votes are published per member, so the vote split (say 7–2) is itself a signal about the likely next move, and markets react to it.
UK inflation and growth
The pound is sensitive to UK-specific data — especially inflation and wage growth, which drive BoE expectations, plus jobs and GDP. Hotter UK inflation that points to a more hawkish BoE tends to lift the pound, and vice versa.
Because the UK is a smaller, more open economy than the US, these releases can move cable sharply.
Risk sentiment and volatility
The pound tends to behave as a risk-sensitive currency — it can weaken in risk-off and firm in risk-on, similar to (though less extreme than) the commodity currencies. Combined with UK political and data surprises, that makes cable more volatile than EUR/USD.
More volatility means the usual rule applies with extra force: size for the range and respect the stop.
Trading cable sensibly
Cable is liquid and widely traded, but its larger swings around BoE decisions, UK data and risk shifts mean a position sized like a quiet major can lose more than expected. Understand the BoE-vs-Fed story, watch the vote split, and manage risk. This is education, not advice.
Frequently Asked Questions
What moves GBP/USD the most?
Relative monetary policy — the Bank of England versus the Fed. When the BoE is more hawkish relative to the Fed, the pound strengthens and cable rises; when the Fed leads, cable falls.
Why is GBP/USD called cable?
After the transatlantic telegraph cable that once carried pound-dollar quotes between London and New York. The nickname stuck and is still used today.
Why is the pound more volatile than the euro?
The UK is a smaller, more open economy, so its data can move the pound sharply, and the pound is risk-sensitive. Combined with political and data surprises, that makes cable typically more volatile than EUR/USD.
What is the BoE vote split?
The Bank of England publishes how each rate-setter voted, so a split like 7–2 reveals disagreement and hints at the likely next move. Markets react to changes in the split, not just the decision.
Is GBP/USD good for beginners?
It is liquid and widely traded, but more volatile than EUR/USD around BoE decisions, UK data and risk shifts. A position sized like a quiet major can lose more than expected, so manage risk carefully. This is education, not advice.