To change your modules you'll need to complete a Module Amendment Form (PDF: 22KB) and send to the Combined Honours Centre as soon as possible for processing. You can also pick up a paper version of the form from the Combined Honours Centre.
It's your responsibility to ensure your chosen modules don't result in a timetable clash. Check the module timetable carefully when selecting your modules.
Some subject areas have number caps (eg English and History modules). If you want to change a module that has a number cap you'll need to visit the relevant School offices to gain permission to change. To find out whether a subject is capped take a look at the subject specific module information.