Cable (GBP/USD)

IntermediateForex & Currency3 min read

Quick Definition

A forex market nickname for the GBP/USD currency pair, derived from the transatlantic telegraph cable that transmitted exchange rates between London and New York in the 19th century.

What Is Cable (GBP/USD)?

Cable is the widely used nickname in the forex market for the GBP/USD currency pair — the exchange rate between the British pound sterling and the U.S. dollar. The term originates from the mid-19th century when the transatlantic telegraph cable, laid across the Atlantic Ocean floor in 1866, was used to transmit currency prices between the London and New York exchanges. This underwater cable revolutionized international finance by reducing the communication time for exchange rate quotes from weeks (by ship) to minutes.

GBP/USD is one of the oldest and most actively traded currency pairs in the world. It consistently ranks among the top five most liquid pairs by daily trading volume. Key characteristics include:

  • Higher volatility than EUR/USD, making it attractive to active traders seeking larger price swings
  • Average daily range of 100-150 pips, compared to 70-100 for EUR/USD
  • Peak liquidity during the London trading session (8:00-16:00 GMT) and the London-New York overlap (13:00-17:00 GMT)
  • Strong sensitivity to Bank of England and Federal Reserve monetary policy decisions

Cable's price movements are driven by several fundamental factors:

  • Interest rate differentials between the Bank of England (BoE) and the Federal Reserve
  • UK economic data: GDP, inflation (CPI), employment figures, PMI surveys
  • U.S. economic data: Non-Farm Payrolls, CPI, FOMC decisions
  • Political events: Brexit was the defining driver of cable from 2016-2020, causing GBP/USD to crash from 1.50 to below 1.20
  • Risk sentiment: The pound tends to act as a mildly risk-sensitive currency, weakening during global risk-off episodes

Historically, cable has experienced dramatic moves. It traded above $2.00 in 2007, collapsed to $1.05 during the 1985 dollar surge, and hit a record low of approximately $1.035 in September 2022 during the UK mini-budget crisis under Prime Minister Liz Truss, before rapidly recovering. The pair's nickname is so deeply embedded in market culture that even traders who know nothing of its historical origin use "cable" routinely in daily communication.

The term "cable" is one of several colorful nicknames in the forex market. Knowing this jargon is important for any trader following market commentary, live trading rooms, or interbank dealer conversations, where shorthand terms are used exclusively.

Cable (GBP/USD) Example

  • 1A forex desk trader might say "Cable just broke 1.2700 on the upside" meaning GBP/USD has risen above the 1.2700 level — no experienced trader would need to ask which pair is being discussed.
  • 2Cable plunged from 1.26 to 1.035 in September 2022 during the UK mini-budget crisis, marking the pound's weakest-ever level against the dollar, before recovering to 1.23 within weeks after the government reversed course.