Well, on Jimi Hendrix's Electric Lady, there is a track titled Voodoo Chile (track 4) as well as a track called Voodoo Child (Slight Return) (track 16). As far as I can tell, the clip played in Top Gear is the later track (Child).
The 'Chile' track was about 15 minutes long and took up nearly the entire first side of the Electric Lady LP.

The 'Child' track was around 5 minutes and is the more common version of the song. No one really knows why Hendrix ended one with an 'e' and the other with a 'd'.
Edit: I just saw your post and realized what I did Overheat. :shock: I'm really disapointed with myself!

That's pratically as bad as saying 'Loo-ee' Armstrong instead of 'Loo-is' Armstrong! ... Excuse me while I go shoot myself in the mouth.