Yes, you can appeal for a longer award although I have to warn you that we have not seen many appeals where the length of the award was the only issue, don't forget that the panel can only consider your conditions and limitations as they were on the date of the original Decision being appealed.
Have you considered the possibility that the shorter awarded is because the DM thinks your limitations may increase over the five years?
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems
Thanks Gordon I trust you and everyone here who always giving honest advice. Your write I can consider may DM thinks my limitations increase in future and awarded me easily next time. Again, need to thanks with my deeply hart all your team and will come to see you when I need your kind advice.