UK deal to serve as testing ground for India’s Western trade ambitions

India’s free-trade agreement with the United Kingdom will take effect on Wednesday, offering businesses on both sides immediate tariff relief while giving New Delhi an early test of the concessions, compliance demands and implementation challenges it may face in future deals with other Western powers.

UK exports in sectors such as luxury vehicles and spirits are expected to benefit, while Indian textiles and leather products will gain as the agreement eliminates tariffs on 99 per cent of exports...