It would genuinely be quicker to list the things on my car that don't either leak fluids out or let them in... I think the only thing that thankfully hasn't been leaking so far is the petrol side of things! Otherwise, coolant, oil, ATF, rain water, refrigerant... everything has either been leaking into or out of the car. And now I've (hopefully) sorted the air con, I braked a ltitle sharply earlier today and a small downpour made its way out of the heater box into the passenger footwell.
Guess I'll be checking the condensate drains tomorrow... unless its the freaking pollen filter/blower/scuttle panel. Pretty sure it was condensate from where it came from and the fact it hasn't done it at all on that side till now.