You're pretty much outta luck in the UK, the factory winch bumper was not a popular option with buyers of new Rangie's
doh: what a lack of foresight!), hence they're pretty rare. Dunno what happened to all the stock dealers must have had, but no-one seems to have any. There are a number of DIY solutions if you :googleit: but you'll need to fab it yourself, or have a handy mate.
I have drawings of the original kit and was gonna try and knock up some templates, but just haven't had the time. I reckon the factory one leaves room for improvement and it wouldn't be hard to redesign the parts to make it stronger, as well as include front recovery points and steering guard mounts.