I am looking for a potential upgrade to my laptop. I want a Windows 10 machine;  something smaller, lighter and more portable than what I now have, preferably with a metal shell. I have a budget of about £250. 

The CPU needs to be at least at the level of an AMD A9-9410, or better, as this is what my current laptop has. 

Other features that are necessary are: at least 32 GB of storage and at least 4 GB of ram with room to add an M.2 SSD, full HD 1920x1080 screen, as thin and light as possible. It must run Windows 10.  

Nice-to-to-haves would be USB type C, and backlit keyboard.  

Please can you advise me on what to buy? I have seen brands like CHUWI, Jumper and Teclast. that all seem to do these standards of laptops.  Thank You!