Forgot to say Frayz, you can buy a replacement coolant bottle from euros for £10ish. Renault want £50 and the ecp one is fine. I've had one on since Aug 2017 and it's been sweet and still looks very clean. Just bin the new lid and keep your oe one 👍
I might just buy another ecp one to show you how crap the mould is now on the thread. They don't even come with a lid anymore.