Now Back covers from Mozo accessories made for Lumia 950/ XL is listed at Amazon UK too, and these ship usually in 2-4 weeks.
Cases are priced at £34.99, and comes in many variety of colours, However back covers for Lumia 950/XL offer some good features:
- Dedicated wireless charging case for Microsoft Lumia 950 XL
- Clips onto the back of your Smartphone to enable wireless charging of the device with a compatible charger
- No external connection to charging interface needed
- Qi wireless charging standard
- Genuine Leather
You can check those back covers from here