15. Undue Influence, Unconscionability, and Equality of Bargaining Power

Abstract

This chapter examines undue influence, which is largely about pressure and influence arising from a relationship. It begins with the basic role of the law on undue influence before moving to the substantive case law. The case law is divided into three categories, which are based on the different ways of proving undue influence. The first relates to what is known as ‘actual undue influence’, which is where a complainant proves undue influence. The second is where undue influence between two parties can be presumed from the circumstances. The third category has been a major problem in modern cases and it involves undue influence coming from a third party. The chapter then turns to the wider issues that complete the ‘bigger picture’. The first of these is the area often referred to as ‘unconscionability’, which is about the exploitation of weakness. The second is the attempt to create a wider ‘inequality of bargaining power’ principle. Finally, the chapter looks at the Consumer Protection from Unfair Trading Practices Regulations 2008, which can cover conduct otherwise classed as duress, undue influence, and harassment.