At circa £250 budget ?, I guess you are using it for basic office applications, some internet browsing, email / facebook, and the best tech spec at this lowish price point would be 15.6 inch screen ( minimum screen size if you have any eyesight problems/tendency to squint when viewing the screen) ,and ideally an Intel i3 processor with both ethernet and wifi to maximise choice of internet access, though for basic applications/office use AMD processors are also upto the job as well.
As a light user and perhaps not as proficient as you would like to be when using a laptop/ manipulating software to maintain efficient running of the device, then you may not need a dvd drive ?, unless you need to install software you already have on disks ?
Black Friday sales commence nearer the end of next month so perhaps at that time it may be possible to purchase a new laptop with an Intel i3 processor .An important consideration will be the warranty and technical support for it should things go wrong - best to buy using your credit card to get section 75 consumer protection for purchases over £100.
Brand you decide on is largely down to personal preference and previous experiences when using a laptop. the build quality of them was better 10 years ago, but now they have more functionality in terms of practical applications
I assembled and sold desktop pc`s and laptops for a number of years, and at this price point build quality is not going to be great but adequate