One of the most common misconceptions in divorce is that examples of unreasonable behaviour can impact a financial settlement. In reality, this is only the case when the bad behaviour goes beyond the norm and has been truly horrific. But, this doesn’t stop this idea being tested in court, as a recent example demonstrates.

Tessa Finch earns £160,000 a year at the BBC and has accumulated a substantial pension. Her ex-husband, Barry Baker, also worked as a journalist but has not wor...