Post # 14
As I understand it only E3303/4 even got out on the line. E3301/2 were regeared and renumbered even before commissioning, and E3305 was significantly reworked even before delivery as a technology demonstrator.
A short summary of the initial types is :
Orig TOPS Numbered TOPS Num Builder Works Electrical Works Rectifier
AL1 81 E3001-23 81001-23 BRCW Smethwick BTH>AEI Rugby Mercury arc
AL3 83 E3024-35 83001-12 Vulcan Earlestown EE Preston Mercury arc
AL4 84 E3036-45 84001-10 N British Glasgow GEC Witton Mercury arc
AL2 82 E3046-55 82001-10 Beyer Peacock Manchester MetVick>AEI Trafford Park Mercury arc
AL5 85 E3056-85 85001-30 BR Doncaster AEI Trafford Park Germanium
AL5 85 E3086-95 85031-40 BR Doncaster AEI Trafford Park Silicon
AL1 81 E3096-97 81024-25 BRCW Smethwick BTH>AEI Rugby Mercury arc
AL3 83 E3098-99 83013-14 Vulcan Earlestown EE Preston Mercury arc
AL3 83 E3100 83015 Vulcan Earlestown EE Preston Silicon
OK, IT cut/paste hasn't come out perfectly, but you get the idea I hope.