Yes you can - you can take your data with you to 48 destinations across Europe. Your SIM should already be set up for roaming so you don’t need to do anything. If you use up your data while you're abroad, simply buy an add-on just like you would in the UK. Add-ons are the same price across the UK and EU. The destinations covered are Austria, Azores, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Canary Islands, Denmark, Estonia, Finland, France, French Guyana, Germany, Gibraltar, Greece, Guadeloupe, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira, Malta, Martinique, Mayotte, Monaco, Netherlands, Norway, Poland, Portugal, Reunion Islands, Romania, San Marino, Saint Martin (French), Saint Barthelemy, Slovakia, Slovenia, Spain, Sweden, Switzerland and Vatican City (Italy).