Disco 2 ACE Leak

My 2003 Disco 2!has an ACE hydraulic hose leak. It’s leaking where the hose has rubbed the metal shelf where the battery sits, photo attached. Is it
possible to fix the hole or is it a hose replacemen?

Replacement hose, you could get one made up at your local hydraulics specialists.

It's high pressure so no fix is possible but please make sure the pump doesn't run dry and also check the steel hoses to ensure there is not too much corrosion and if there is any rust present then I would advise you rub it back with some emery cloth and get some rust preventative paint on there and then use an underbody wax to prevent future corrosion.

Clean it up and go to a hydraulic specialist and see if they can make a hose