British Prime Minister Boris Johnson will travel to India next month in his first major bilateral visit to another country since taking power last year, his office said yesterday. During the trip, Johnson will invite India to join next year's G7 summit, which Britain is hosting, as one of three guest countries, alongside South Korea and Australia. The Indian trip is aimed at strengthening bilateral trade ties and investment, and cooperation in various areas including defence, security, health and climate change. The visit will coincide with India's annual Republic Day celebrations on January 26.