Gerald is Priestley's tool to reveal the flaws of the upper classes. He represents the aristocracy
Priestley raises false hope that Gerald is going to change like the younger Birlings
Gerald priorities business over his love and marriage for Shelia
Like Eric, Gerald considers the women who frequent the palace bar only in terms if their appearance he criticises them furthering the patriarchal society of Edwardian England.
Priestley allows the audience to gain sympathy towards Gerald as he starts to take responsibility for his actions. this is exciting because he is a member of a class that holds power and will be able to make changes
Through Gerald Priestley presents the aristocracy as self-interest people who, instead of sharing their wealth, are more likely to follow the family tradition of preserving it within their family