Thank you for your response, it's useful to know what I should be seeing.
However, I do not see a page telling me how it has calculated my foreign tax credit relief due.
When I click on 'View your calculation', it just displays the calculation which doesn't take into account tax already paid.
Perhaps the page you are referring to (telling me how it has calculated my foreign tax credit relief due) is meant to be displayed earlier. When I go into the 'Change overseas employment and self-employment' section, and click on 'Save and continue', it gets "stuck" and re-displays the same page. Is this where I should see the page you are referring to?
Are there any other questions which affect whether this page is displayed which I could be answering incorrectly? e.g. I answer No to the question “Do you wish to claim Foreign Tax Credit Relief on Capital Gains”, because my foreign income was from employment rather than capital gains.