Water In Drivers Footwell Coming From Scuttle Area

[Shabazmo]

I am now tackling the 3rd water leak into my 16 years old  galaxy that I have owned from new. To cut a long story short,  If I put water via a hose into the scuttle area, I can clearly see it drain big time via the drain holes, so no problem there re blockages, but, some water will enter the cabin.  Having lifted the carpet and felt, I can see the trickle of water from behind the fuse box, and onto the wheel arch and collecting in the footwell.

 

So the problem here is how do i fix this. Do I have to remove the fuse box to get a better view of the entry point or is there something I should do from the engine compartment.