HAOTIAN Case for Samsung Galaxy M51 and 2 Screen Protector, 360 degree Rotating Ring Kickstand Shockproof Armor Cover, Silicone TPU + Hard PC Hybrid Case with Magnetic Car Mount. Black

Perfect fit

It's a really good case, not too bulky. The only issue is that you have to remember to cover the magnet with your hand when using NFC to pay for stuff or it thinks there are two cards and crashes the PDQ at Tescos 😬 Hence 4 stars. The screen protector is easy to put on and does the job.