Floating bridge right? Get a second bridge, sand the bottom of the new bridge down. You'll have to adjust the truss rod once you have the action lower.The bridge is at the lowest setting.
That was no expert!Thanks for the replies. I decided to take it to a guitar shop. The guy told me the truss rod needed adjusting. He charged me £15. The bass is now unplayable. The action is 1/2 inch at the 12th fret. So much for experts!
Yes, I am pleased with the outcome. I might be old fashioned but I prefer face to face for fixing issues like this.