"an incorrect sum for income I have earnt from lecturing has been used.
"(a)the decision was wrongly made as a result of an error on the part of the tribunal staff; or (b)a party did not receive notice of the proceedings leading to the decision; or (c)the decision was made in the absence of a party or person entitled to be heard; or (d)new evidence has become available since the conclusion of the hearing to which the decision relates provided that its existence could not have been reasonably known or foreseen; or (e)the interests of justice require such a review."