He said it has a gas leak and £75 to repair plus parts (if gasket needed). As the Honda Jazz Exec is 2018 he said poss Honda would underwrite the repair as not far out from guarantee. A/C is still working. Advice on what to do welcome. Wait for it to fail or get it done? Thanks.

Which component has failed?

Either way, I would fix it sooner than later but not sure it would be covered under warranty as it would be a component with an factory issue or known issue (such as A/C compressor), but good luck with that one!

Let us know how you get on with it