Car Insurance Help

Hi all, I am wondering about car insurance. I currently have multi car as i have three cars on the road. What other options have i got for insurance as i may be adding a fourth car to the road. One of my cars is a classic, another is a high performance, and the third is a daily driver. The fourth i may be adding is another high performance car. Im just fed up paying big money for insurance on multi car.

Was thinking along the lines of traders or equivalent, but not sure whats about.

Any help appreciated.....
Cheers