The easiest way to see all the submissions for a particular challenge can be in a slideshow, so we've created them for weeks #9 through #12.
Challenge #9 Take a natural scene and distill it down into its fundamental components to make the simplest and strongest statement. — Fran Halsall
Challenge #10 Get wet. Take a photograph in the rain using the elements of the situation to your visual advantage. — Peter Dench
Challenge #11 Photograph something that you have never shot before, in a style you have never used before, so the photo is not recognisable as yours! — Martin Parr
Challenge #12 “If a photographer cares about the people before the lens and is compassionate, much is given. It is the photographer, not the camera, that is the instrument.” (Eve Arnold) — David Chancellor
(the slideshows do pull in the odd photo from the wrong challenge).