I was looking at this cheap one.
It's likely to be disappointingly slow with just 4GB of RAM and a sluggish (5400RPM) mechanical hard drive.
I recommend you aim for an 8GB model with a SSD. If you're not planning on saving a lot of stuff then a 128GB SSD will probably suffice. Such a model will cost roughly £150 more.
A lot of laptops these days have appalling screen and audio quality so I also recommend that you try before you buy. Your local PC World would be a good place to road-test it as most display models have music files pre-loaded and an active Internet connection. You can always buy from Argos after making your decision.