Helen Dyson is a close friend of Tom King.
Helen arrives with her husband Roger, both of whom have been friends with Tom and his late wife Mary for many years. They arrive to visit Tom and his fiancée Charity Tate several weeks before the planned wedding. Helen sees Charity, much younger than Tom and with little taste for domestic life, as being unworthy of him. While they are cooking a meal together, Charity makes a remark about Helen's food being a heart attack in the making. Soon, they receive a phone call saying that Roger has died of a heart attack while playing golf, causing Helen to lash out at Charity. Helen made her last appearance at Tom's funeral in February 2007.