In any Administrative Process Act (§ 2.2-4000 et seq.) action or action at law or suit in equity, the final order, verdict of the jury, or if no jury the judgment or decree of the court, may provide for interest on any principal sum awarded, or any part thereof, and fix the period at which the interest shall commence. The final order, judgment or decree entered shall provide for such interest until such principal sum be paid. If a final order, judgment or decree be rendered which does not provide for interest, the final order, judgment or decree awarded or jury verdict shall bear interest at the judgment rate of interest as provided for in § 6.2-302 from its date of entry or from the date that the jury verdict was rendered. Notwithstanding the provisions of this section, any judgment entered for a sum due under a negotiable instrument, as defined by § 8.3A-104, shall provide for interest on the principal sum in accordance with § 8.3A-112 at the rate specified in the instrument. If no such rate is specified, interest on the principal sum shall be at the judgment rate provided in § 6.2-302. Final orders may be recorded, enforced, and satisfied as orders or decrees of a circuit court upon certification of such orders by the agency head or his designee.