Overview:Martin and Louisa search for a nursery now that Janice has left, and Mrs Tishell is shocked to find out that Al has very high blood pressure. Louisa also helps with the diagnosis of a pupil, which spurs her on to explore the possibilities of a change of career. This is not welcome news for Martin, who dislikes any kind of change, even if it could be for the better. Elsewhere, Ruth is approached about selling her farm.