Lots of bands are missing from the list, but I can't be bothered to add them and I doubt anyone would vote for them anyway. Here's a list of a few of them:
Lionheart - Dennis Stratton. Formed when Dennis left Maiden and split in 1985 after releasing and album called Hot Tonight.
Lone Wolf - Paul Di'Anno. No recordings available and not much known about it.
Trust - Clive Burr. Clive played as a session drummer on Trust (1982), not to be confused with their debut album from 1979.
Di'Anno - Paul Di'Anno. Released two albums; Di'Anno and Two Swimmers And A Bag Of Jockies (both 1984). Said to sound a bit like Journey, but I wouldn't know really.
Gogmagog - Paul Di'Anno and Clive Burr, also comprising Pete Willis (Def Leppard, guitar), Neill Murray (Whitesnake, bass) and a certain Janick Gers (guitar). Released a demo EP entitled I Will Be There in 1985, but never got any further.
Battlezone - Paul Di'Anno. Two albums: Fighting Back (1986) and Children of Madness (1987). Along with Killers the one Paul fans use to appreciate the most.
Praying Mantis - Dennis Stratton and at times Paul Di'Anno and Clive Burr. Dennis and Paul played on the band's reunion album Live At Last (Japan, 1990), and Dennis carried on afterwards as lead vocalist and guitarist.
Desperados - Clive Burr. Formed by Dee Snider. Recorded an album but it was never released (not certain on this one), and none of the members has any legal rights on the material from what I've heard.
Elixir - Clive Burr. Clive was the drummer on the second album, Lethal Potion.
There's a few one's missing though, mostly NWOBHM all-star albums I'm too tired to list.