The pump/filter should be attached to the washer bottle - I presume you can get to that (if it’s like an S1 aircon car, it’s accessed through the nearside wheel arch by removing the liner)?
Hmm, I don’t even own a jack so getting the wheel liner off is going to be a lot of trouble I’m pretty sure the blockage is somewhere at the front as that’s where the water seems to be leaking from.