Best wifi range extender?

I recently have started a new internet subscription with Talk talk, and while its fast 2 feet away from the router, when you go further away to my bedroom not so much.

I need a range extender (that's wireless so doesn't have to have a huge cord running from the router, but can be plugged into a power socket) it needs to have WiFi and Ethernet as it will go to A computer, a PS4, an Ipad, an Iphone and a laptop.

Both the computer and the PS4 definitely need Ethernet and it would also be nice to have it for the laptop but not necessary.

Also if it helps i live in Britain, so american things aren't really an option unless you can get them here.

And if possible the cheapest one you can find that doesn't have really bad reviews as i am already paying a lot for the internet itself.

Thanks

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