R59 Coolant change.

Hi everybody, this is my first Mini and loving every minute of it, should have bought one years ago. It's an R59 Roadster Cooper SD. Just completed a list of service jobs which I do on all my cars when I first get them. I've only got the coolant to change but can't for the sake of me find where to drain the radiator from. I've looked everywhere online but can't find a single description or video relating to the R59 or newer mini coolant change. Do I have to take of the front bumper to access the hoses or is there something I'm missing.
Thanks in advance.

Welcome to NMS. You should only need to remove one of the panels underneath and take off the radiator hose. You shouldn’t need to take the bumper off

Thanks for quick reply will have another look in the morning.