465/2 and Class 466s were both built by Metro-Cammel and have detail diffrences from the 465/0 and 465/1 fleet which were built by ABB & BREL. The easiest diffrence to spot is the 'aircraft' styled ventilators on the roof, whilst the 465/0 and 465/1s have a flat 'streamlined' appearence compared the the 465/2s and 466s which are both diffrent from the rest of the fleet. 465/2s also retain there orginal traction motors while the 465/0s and 465/1s have new Hitachi traction equipment and sound diffrent! Long message and explaining my mistake! 
