But Tetley and Britain means more than tea to the Tatas. The deal will be the driver of the family's bid to expand its moribund empire beyond India. Although it has been overtaken in recent years by the thrusting Ambani family's Reliance Industries as India's biggest corporate empire, Tata still controls a sprawling domain, albeit a sclerotic one that is not moving as fast as India. The family has more than 100 operating companies - 30 of them listed - and will this year command sales of £8bn in sectors as diverse as software, hotels, telecoms, steel, power and trucks.