1. Apple UK Ltd.
2. Samsung Electronics (UK) Limited
3. Google (UK) Limited
4. Xiaomi Technology UK Limited
5. Motorola Mobility UK Limited
6. OnePlus Technology (UK) Limited
7. TCL Technology Group Corporation
8. HMD Global Oy (UK) Limited.
9. OPPO Mobile Telecommunications Corporation Ltd.
10. Vivo Communication Technology Co. Ltd.