Basically I thought that the regional settings of a report generated using Report Builder 2.0 on a MS SQL Server 2008 instance were dependent on either the server or the client machine. Realised that this was actually specified in the report. Here's a quick note on how to set Dates and Times used in parameter fields to UK format (dd/MM/yyyy).
You can override this in the report by:
- Go to Design
- Select the View tab
- Check that the "Properties" pane is displayed/ticked
- Change Language under Report Properties > Localization to en-GB
- Save the report and test.