Yours is different, being LHD. It won't have that union - I think the hose just goes straight on to the rack. If its leaking though I presume it also has a steel piece through the wheel well which has rusted away the same as RHD versions.
PS fluid isn't corrosive - its just oil, so shouldn't have affected the subframe paint. Brake cleaner is best for stuff like that. Spray it on and it will dissolve the oil and take it away with it without damaging anything. Something like this:
https://www.ebay.co.uk/itm/HOLTS-PRO...UAAOSwx6pYpbAt
Don't use carb cleaner or tar remover as they are too aggressive, or laundry detergents as they are generally alkaline and not good for aluminium! Gunk is very effective, but the smell is dreadful and lasts for ages. It also eats driveways! A mild engine degreaser would also work.