Masala Chai is an Indian spiced tea. It consists of black tea, spices, sweetener and milk, brewed together and strained. The tea is usually Assam, a strong tea that is not easily overpowered by the spices and sweeteners. Traditional whole spices are used, the "warm" spices - one or more of cardamom, cinnamon, ginger, star anise, peppercorn, and cloves.
Although it's not really a British "cup of tea" it's actually rather delicious!