Robson gave Webb his full international début, against West Germany on 9 September 1987 at the age of 24, becoming the 1,000th player to be capped by England. His first goal came against Turkey on 14 October that year, in an 8–0 victory at Wembley in a Euro 88 qualifier. He appeared in two of England's group games at Euro 88 (which all ended in defeat), but his next international appearance – against Denmark in a friendly on 14 September 1988 – he scored the only goal in the game at Wembley. On 3 June 1989, he scored the third international goal of his career with a 3–0 World Cup qualifier victory over Poland, again at Wembley. On 24 April 1990 Webb made his first appearance with the England B team, playing in the 2–0 win over the Czechoslovakia B team at Roker Park. Despite missing the bulk of the 1989–90 season at Manchester United with injury, he was included in England's 1990 World Cup squad and made his solitary appearance of the competition in the third place playoff defeat by Italy. Before the year was out he would become the first player to be sent off whilst on England duty in three years when he saw red for the England B team in a match against the full Algeria team. On 12 May 1992, he scored what would be his final goal for England in a 1–0 friendly win over Hungary in Budapest. He would make four more international appearances for England, the last coming on 17 June 1992 when England lost 2–1 to hosts Sweden in their final Euro 92 group game. Webb was capped 26 times in five years for the England team, and scored 4 goals.