Apart from the Leyland Olympic, four Hants & Dorset buses - three double deck and one single deck - were destroyed as well as a luxury coach, an Ulsterbus Bristol RE single deck and a Southdown Bristol VR double deck.
FoKAB sends its heartfelt sympathy to the owners who have lost their vehicles.
The incident illustrates the ever more urgent need to obtain permanent, safe, dedicated premises in which to store historic vehicles.