SuperWASP observations of long timescale photometric variations in cataclysmic variables N. L. Thomas, A. J. Norton, D. Pollacco, R. G. West, P. J. Wheatley, B. Enoch and W. I. Clarkson A&A, 514 (2010) A30 Published online: 06 May 2010 DOI: 10.1051/0004-6361/200912650