The nickname of the British flag is the Union Jack.London taxis are traditionally black.The national Scottish costume is called a kilt.The other name for the Houses of Parliament is the Palace of Westminster.The name "Britannia" was introduced by the Romans.Welsh, Irish Gaelic, and Scottish Gaelic are still spoken Celtic languages.Druids were ancient Celtic priests and religious leaders.The famous temple of the Druids is Stonehenge.Boadicea was a queen of the Celtic Iceni tribe in ancient Britain who led a rebellion against the Roman occupation.Julius Caesar attacked Britain in 55 BC.