Noticed water sitting under the bonnet

[dirchy]

Noticed this the other day but just had chance to investigate further.

If I open the bonnet after rain I end up with water running out of the area between the two skins of the bonnet, over the engine. Obviously this is not ideal if it's sitting trapped between these skins along the front lip of the bonnet.

It's not coming from where the pipe cleaner is, rather over the top of the inside skin, almost back up the underside of the bonnet.

Has anyone else seen this?

I took of a pic of where I've cleaned out a load of grime, dirt etc from what look like drain holes. Hopefully this will sort it out.