If your application is rejected, you can appeal within 6 months of the rejection letter. To appeal you will need to request another Independent Mobility Assessment. This assessment will be carried out by a different practitioner from the individual that completed your original assessment.
Your application and Independent Mobility Assessment will be reviewed and you will be advised of the appeal decision based on all the evidence provided.
If your appeal is unsuccessful, you can't re-apply for 6 months unless there is a significant change in your mobility.