Doctor in the House S04E22 - An Officer and a Gentleman

Envious of the Binghams' new house which they bought with financial help from their parents, Dick, Paul and Duncan consider buying a property. Dick and Paul offer six thousand to Major Woodnutt for his house in Primrose Crescent, which he says he will honour as an officer and a gentleman. However, when Duncan innocently puts in a higher offer he accepts that instead and eventually sells to a couple who put in an even higher bid. The house is lost but revenge presents itself when the major arrives at the hospital in need of an operation.