<Li> Joan Sims as Mrs. Fiona Wembley , the Carpenter family 's cordon bleu cook . She is something of a confidante and mother figure for the others in the house and becomes upset if Tony is n't eating properly . Fond of sherry - leading to her largely inaccurate catchphrase `` just the one '' - her tippling is indugled by Tony ; when she fears the sack because Ruth is returning home , she confides in Sam that she worries another employer would n't be so understanding . Late in series one it 's revealed that she never actually married Mr Wembley , as he was killed in the Korean war before they could . </Li>
<Li> Joan Sims as Mrs. Fiona Wembley , the Carpenter family 's cordon bleu cook . She is something of a confidante and mother figure for the others in the house and becomes upset if Tony is n't eating properly . Fond of sherry - leading to her largely inaccurate catchphrase `` just the one '' - her tippling is indugled by Tony ; when she fears the sack because Ruth is returning home , she confides in Sam that she worries another employer would n't be so understanding . Late in series one it 's revealed that she never actually married Mr Wembley , as he was killed in the Korean war before they could . </Li>
who played mrs wembley in on the up
who played mrs wembley in on the up
Joan Sims
Joan Sims