By the provisions of Order 2 Rule 31 of the Supreme Court Rules both facts in the affidavit, i.e. good and substantial reasons for failure to appeal within the prescribed period; and grounds of appeal which prima facie show good cause why the appeal should be heard must co-exist for the application to succeed. An application for extension of time to appeal would succeed no matter how long after it is brought provided there are good and substantial reasons for the delay. Once a genuine ground on jurisdiction is the reason for the appeal, good and substantial reasons for the delay are no longer necessary.
— O. Rhodes-Vivour, JSC. Francis v. FRN (2020) – SC.810/2014