It is a bit of both. My 1st Civic was a heap of junk, failed components and poorly put together. The CRV .... well made, but quite a few squeaks and rattles .... the 2nd Civic is fine. So in a nutshell, don't buy the first year of UK Jazz production ... they will be rubbish. The 2nd year, almost up to Japanese standards.
The only Japanese Honda I have tried at any length was the previous generation Jazz, this was a pretty horrid car but it was perfectly built and solid.