www.mostphotos.com Cheap photo agency with a number of good royalty free pictures for purchase.

search.creativecommons.org Make searches for non-professional pictures free of charge for editorial use. Make sure to follow the license rights.

www.gettyimages.com Photo agency with royalty free and editorial pictures.

www.panos.co.uk Photo agency specialising in global social issues.

www.istockphoto.com Royalty free stock photos, vector art illustrations, stock footage and audio for print and use on websites and presentations.