It was one of those hubs! Thinking about it I probably have a spare somewhere (did I buy two off you or just one?) hahaha. No harm in having a new one anyway, it will presumably see the car out.
It started doing a kinda thumpy rumbling on the motorway, thought I might have a flat so pulled over at the petrol station just up the road to check tyre pressures.... when I got to the rear left I could feel the heat radiating off the rim, it had got that hot hahaha.
Still drove it like another 100km just to make sure it was really, really rooted 😥