Hello,
Under £1000 you will get number of good options but choosing the best one is a little bit tricky. So here I have chosen some of the best gaming laptops as per your budget and I hope it will help you.
1. Dell G3
It comes with Intel Core i5-10300H, NVIDIA GTX 1650 4GB graphics card, 512GB SSD, 8GB RAM.
2. MSI GF63 Thin 10SCSR-048
It comes with Intel Core i7-10750H, NVIDIA GTX 1650Ti 4GB graphics card, 256GB SSD, 8GB RAM.
3. ASUS TUF FX506LI
It comes with Intel Core i5-10300H, NVIDIA GTX 1650Ti 4GB graphics card, 512GB SSD, 8GB RAM.