Please note that the section in some specifications on 'Resitting of units' is incorrect. This will be amended in the next version of the specification. The revised version is below:

"Students can resit a unit once before claiming certification for the qualification. For internally assessed units, students will need to retake all the assessment requirements for that unit.
  
At least 40 per cent of the assessment must be taken in the examination series in which certification is requested, and the results from these assessments must be used. Therefore, any previous, banked results for the unit(s) that are being used to satisfy the terminal requirement cannot be used even if they are better than the results achieved in the terminal series.
 
Results of units held in Edexcel’s unit bank have a shelf-life limited only by the shelf-life of this specification, and subject to the terminal requirement, these unit results may be re-used after certification."