The Association of Photographers' Open contest is open to professional and amateur photographers, and has no categories and themes.

Last year 4000 people entered the competition, which offers the chance to display your work at the AOP Open exhibition, as well as see it publish in a book.

This year's judges are Rhiannon Davies, advertising and corporate manager at Magnum London; photographers David Sykes and Jim Naughten; Ed Webster, creative producer for 4 Creative; and Diane Smyth, deputy editor of the British Journal of Photography.

For more information and to enter the competition, visit the AoP's website.