HST (High-Speed Train) 125

HST 125, or High-Speed Train 125, refers to the Class 125 Express trains used in the UK, primarily in the 1960s and 1970s. These trains were designed for rapid intercity travel, capable of reaching speeds up to 125 miles per hour. They featured streamlined designs and electric or diesel power for efficient journeys between major cities. The HSTs revolutionized rail travel by significantly reducing travel times and increasing comfort, establishing a standard for high-speed rail service in the UK. They remain iconic in rail history and have influenced modern high-speed train development.