Precedent Map

Precedent Map

The Precedent Map is a visualisation of a case and its relationships to other cases. An alternative to long lists of cases, the Precedent Map makes it easier to establish which cases may be most relevant to your research and help you to prioritise further reading. You also get a useful overview of how the case was received.

To open the Precedent Map, click the button in the top-right corner.

In Multiple View, the Precedent Map icon looks like this:

What do the circles represent?

  1. The large white circle represents the main case.
  2. The circles inside represent cases cited within the judgment.
  3. The circles outside represent those which have subsequently referred to your case.

What do the colours mean? 

  1. Colours correspond to positive, neutral or negative treatments.
  2. Select which treatments you wish to view from the checkboxes at the top of your screen.
  3. Hover over an arrow to see the exact treatment type.

Green indicates a ‘positive’ relationship, e.g. applied, approved or followed.
Yellow indicates a ‘neutral’ relationship, such as referred to or considered.
Red indicates a ‘negative’ relationship, such as distinguished or overruled.

What do the sizes show?

  1. The size of a case’s circle represents the number of citation relationships it shares with the main case. The larger the circle the more relationships it has in common and the more likely it is to consider similar points of law.
  2. To see the shared citation relationships, click on a related authority.

Citation relationships: An example

On the precedent map for Oxley v Hiscock 2003 shown below, we have clicked Stack v Dowden. You can see that five cases which have a relationship in Oxley v Hiscock, also have a relationship with Stack v Dowden.

If we click on Grant v Edwards, a case cited in Oxley v Hiscock, you can see that only one case which subsequently cited Oxley v Hiscock, also cited Grant v Edwards.

Therefore Stack v Dowden is likely to have a more detailed discussion of the same issues that are in Oxley v Hiscock.


  • Open a Precedent Map for another case: Double click on its circle
  • Open the judgment for a case: Click on the case title at the top of the screen
  • Go between Precedent Maps: Use the arrows on the top left