Today I renewed the insurance on my P38 with NFU Mutual. It was just £312.74 & I can pay by monthly direct debit at no extra cost.

Apparently this product works well for fixing small leaks in A/C systems https://www.halfords.com/motoring/engine-oils-and-fluids/air-con/a%2Fc-pro-r-134a-super-seal-air-con-stop-leak-537934.html