I can't remember the exact location, as it's over 5 years since I've had an FL1 scuttle panel off, but I'm sure the drains are towards the outer edges of the intake plenum. Maybe careful of a small amount of water in the plenum area will help you identify the exact location of the drains. Unfortunately I work on a variety of different vehicles, so they all blend into one in my head. :/
However there will be a way for water to get out from below the plastic scuttle panel, or it would drain through the heater intake, which is where I suspect it's coming from.
The 2 corrugated pipes entering the plenum area are for cooling the engine and gearbox control modules.