The town of Crawley, about 30 miles south of London, has been inhabited since Roman times. It grew substantially after World War II, absorbing people from bombed-out parts of the capital. There's a 13th century church and an old stagecoach inn that dates to 1615. The latest census figures show most of the roughly 100,000 people registered as living in Crawley are white and British-born.
But a stroll around town reveals a different picture.