What's the cheapest insurance for an 18 year old?

"I just went online and was cited 8grand to obtain covered to my fathers 1.9 tdi VW BoraCan anybody give guidance where you should obtain the cheapest motor  insurance    within the U.K. I've only past my test and I'm 37 years of age to me. I am looking to get a 1.3 engine. The price I've received is 789.
"And so I can work I want travel