In what order should the pallets be loaded?

On multi-drop deliveries, the first pallet to be delivered should be the last pallet to be loaded on the lorry. Heavy pallets, being delivered to more than one site, should be alternatively loaded on both sides to keep the weight evenly placed across the lorry once some of the pallets have been off-loaded and delivered. This is done to prevent the lorry leaning with too many heavy pallets on one side when moving off to the next delivery.