Rising Damp to his belief in some aspect of Philip's lore: for example, the 'love wood' which fails to excite Miss Jones (in the 'Charisma' episode, first broadcast 1974). Philip is an intelligent, educated man (more so than the moderately educated Alan and Miss Jones), he is sophisticated and suave; this makes Rigsby suspicious of him, particularly as Miss Jones openly fancies him. Philip does not reciprocate Miss Jones's romantic interest. Croydon was not revealed to be the true birthplace of Philip until the film version of "Rising Damp" (1980). Don Warrington commented in Britain's 50 Best Sitcoms on Channel 4, that
Damp (structural) the fabric of the wall in other ways – e.g. unwashed sea sand or gravel used in the construction of the wall. If there is no damp-proof course and rising damp is suspected (tide mark, moisture confined to lower section of wall etc. ...) then a number of diagnostic techniques can be used to determine the source of dampness. BRE Digest 245 states that the most satisfactory approach is to obtain samples of mortar in the affected wall using a drill and then analysing these samples to determine their moisture and salt content to assist in providing appropriate remedial building