A 2002 study based on interviews with 350 people, mainly in the UK, who said they have had an experience of an angel or angels…
… describes several types of such experiences: visions, sometimes with multiple witnesses present; auditions, e.g. to convey a warning; a sense of being touched, pushed, or lifted, typically to avert a dangerous situation; and pleasant fragrance, generally in the context of somebody's death. In the visual experiences… the angels described appear in various forms… either the "classical" one (human countenance with wings), in the form of extraordinarily beautiful or radiant human beings, or as beings of light.
In the US, a 2008 survey by Baylor University's Institute for Studies of Religion, published by TIME magazine, which polled 1,700 respondents, found that 55 percent of Americans, including one in five of those who say they are not religious, believe that they have been protected by a guardian angel during their life.
An August 2007 Pew poll found that 68 percent of Americans believe that "angels and demons are active in the world", and according to four different polls conducted in 2009, a greater percentage of Americans believe in angels (55%) than those who believe in global warming (36%).