belinda l. lange (born 23 december 1953), known professionally as belinda lang, is an english actress. she is known for playing liza in the itv sitcom "second thoughts" (1991–94), and bill porter in the bbc sitcom "2point4 children" (1991–99). her theatre credits include london productions of the noël coward plays, "present laughter" (1981), "blithe spirit" (1997), and "hay fever" (2006).