Wireless modem ("Three") +

This modem connects up to 5 Wi Fi enabled devices at the same time, like laptop, tablet or gaming devices. Specially good for mobile phones. You can check it online at three.co.uk and see how it works (to activate it you should buy Sim card from Three store on the nearest Oxford street or any other stores for 15 including 40 GB for 1 month and sometimes they give free UK number with min. and texts.)