Coolant leak

[Faze2]

I've found the best way to check for coolant leaks, if it's puzzling you, is at night time in the dark with a torch, or a garage with no lights on will do too.
Coolant leaves a shiny sticky residue when it dries on the engine and torch light makes it clearly visible so you can really see what's going on and exactly where it's originating from.

Out of interest does a UV light work with this ?