Draper Red Line 18V battery charger (Bracknell Forest RG12)

I have an ANCIENT Draper Red Line battery powered drill and charger. It's probably at least 20 years old.

It was working OK last time I used it, but since then the drill has decided that enough is enough and no longer works. The charger is fine, the battery - maybe, but it's old so it's not fantastic.

If anyone has a vintage Red Line drill you might want the charger and maybe the battery as a spare.