Quoted directly for the Physics Teachers Support Material:
"All information relevant to the investigation must be presented within the report. Appendices will not be read by the examiner. The only appendices permissible and sometimes necessary are consent forms for students participating in data collection.
The full raw data is no longer required in an appendix if there is too much to fit in the actual report. The teacher should have seen the full raw data and made a comment in the work to that effect. The sample data used in the report should be taken at regular intervals so it covers the range of the independent variable."