S v Floyd  EWCA Civ 201
Floyd's decision to withhold payment of rent had nothing to do with his disablity, so the Disability Discrimination Act 1995 could not be used to resist a possession order under the Housing Act 1988.
See the subsequent decision in London Borough of Lewisham v Malcolm  UKHL 43.
Nearly Legal - a good series of articles and commentary on this case and related cases.
Law Reports website - permission to appeal to HL refused, 5/11/08