Garden Studio Wi Fi

[TrulloForno]

I am struggling to get a wi fi signal in my garden studio. Please can someone suggest the best solution that doesn't require running a cable? 
I have a BT Halo 3. I also have 1 Wi Fi Disk, which apparently extends the signal but isn't helping enough to extend to the garden studio. 
Thank you 

[licquorice]

You can't change the laws of physics, if the WiFi signal doesn't reach there is nothing you can do except run a cable or use powerline adapters if the garden studio has mains from the same consumer unit as the house sockets.

https://www.tp-link.com/uk/home-networking/powerline/