Extra roaming
If you're on a Radius tariff with Extra roaming, you can use your UK data, minutes, and texts at no extra cost in 83 destinations, including:

Europe & nearby:
Austria, Azores, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira, Malta, Martinique, Mayotte, Monaco, Netherlands, Norway, Poland, Portugal, Reunion, Romania, Saint Martin, San Marino, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, Vatican City

UK Islands & territories:
Guernsey, Isle of Man, Jersey

Worldwide destinations:
Albania, Anguilla, Antigua & Barbuda, Aruba, Australia, Barbados, Bermuda, Bosnia and Herzegovina, British Virgin Islands, Canada, Cayman Islands, Dominica, Ghana, Grenada, Jamaica, Kenya, Lesotho, Mexico, Montserrat, Mozambique, New Zealand, Saba (Netherlands Antilles), Sint Eustatius (Netherlands Antilles), Sint Maarten (Netherlands Antilles), South Africa, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Eswatini (Swaziland), Trinidad and Tobago, Turks and Caicos, USA

Global roaming – Just £5 a day
Use your UK allowance in the following 70+ destinations for only £5 a day:

Andorra, Afghanistan, Argentina, Armenia, Bahrain, Bangladesh, Bonaire (Netherlands Antilles), Brazil, Cambodia, Chile, China, Colombia, Costa Rica, Curacao, Democratic Republic of Congo, Dominican Republic, Ecuador, Egypt, El Salvador, Fiji, Georgia, Guatemala, Guyana, Haiti, Honduras, Hong Kong, India, Indonesia, Israel, Japan, Jordan, Kazakhstan, South Korea, Kuwait, Laos, Macau, North Macedonia, Malaysia, Moldova, Mongolia, Montenegro, Morocco, Myanmar, Nicaragua, Oman, Pakistan, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Puerto Rico, Qatar, Russia, Samoa, Saudi Arabia, Serbia, Singapore, South Sudan, Sri Lanka, Sudan, Suriname, Taiwan, Tanzania, Thailand, Tonga, Ukraine, United Arab Emirates, Uruguay, US Virgin Islands, Uzbekistan, Vanuatu, Vietnam

Extra roaming
If you're on a Radius tariff with Extra roaming, you can use your UK data, minutes, and texts at no extra cost in 83 destinations, including:

Europe & nearby:
Austria, Azores, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira, Malta, Martinique, Mayotte, Monaco, Netherlands, Norway, Poland, Portugal, Reunion, Romania, Saint Martin, San Marino, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, Vatican City

UK Islands & territories:
Guernsey, Isle of Man, Jersey

Worldwide destinations:
Albania, Anguilla, Antigua & Barbuda, Aruba, Australia, Barbados, Bermuda, Bosnia and Herzegovina, British Virgin Islands, Canada, Cayman Islands, Dominica, Ghana, Grenada, Jamaica, Kenya, Lesotho, Mexico, Montserrat, Mozambique, New Zealand, Saba (Netherlands Antilles), Sint Eustatius (Netherlands Antilles), Sint Maarten (Netherlands Antilles), South Africa, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Eswatini (Swaziland), Trinidad and Tobago, Turks and Caicos, USA

Global roaming – Just £5 a day
Use your UK allowance in the following 70+ destinations for only £5 a day:

Andorra, Afghanistan, Argentina, Armenia, Bahrain, Bangladesh, Bonaire (Netherlands Antilles), Brazil, Cambodia, Chile, China, Colombia, Costa Rica, Curacao, Democratic Republic of Congo, Dominican Republic, Ecuador, Egypt, El Salvador, Fiji, Georgia, Guatemala, Guyana, Haiti, Honduras, Hong Kong, India, Indonesia, Israel, Japan, Jordan, Kazakhstan, South Korea, Kuwait, Laos, Macau, North Macedonia, Malaysia, Moldova, Mongolia, Montenegro, Morocco, Myanmar, Nicaragua, Oman, Pakistan, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Puerto Rico, Qatar, Russia, Samoa, Saudi Arabia, Serbia, Singapore, South Sudan, Sri Lanka, Sudan, Suriname, Taiwan, Tanzania, Thailand, Tonga, Ukraine, United Arab Emirates, Uruguay, US Virgin Islands, Uzbekistan, Vanuatu, Vietnam

Extra roaming
If you're on a Radius tariff with Extra roaming, you can use your UK data, minutes, and texts at no extra cost in 51 destinations, including:

Europe & nearby:
Guernsey, Isle of Man, Jersey, Austria, Azores, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira, Malta, Martinique, Mayotte, Monaco, Netherlands, Norway, Poland, Portugal, Reunion, Romania, Saint Martin, San Marino, Slovakia, Slovenia, Spain, 
Sweden, Switzerland, Turkey, Vatican city.

Global roaming – Just £5 a day
Use your UK allowance in the following 70+ destinations for only £5 a day:

Andorra, Afghanistan, Argentina, Armenia, Bahrain, Bangladesh, Bonaire (Netherlands Antilles), Brazil, Cambodia, Chile, China, Colombia, Costa Rica, Curacao, Democratic Republic of Congo, Dominican Republic, Ecuador, Egypt, El Salvador, Fiji, Georgia, Guatemala, Guyana, Haiti, Honduras, Hong Kong, India, Indonesia, Israel, Japan, Jordan, Kazakhstan, South Korea, Kuwait, Laos, Macau, North Macedonia, Malaysia, Moldova, Mongolia, Montenegro, Morocco, Myanmar, Nicaragua, Oman, Pakistan, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Puerto Rico, Qatar, Russia, Samoa, Saudi Arabia, Serbia, Singapore, South Sudan, Sri Lanka, Sudan, Suriname, Taiwan, Tanzania, Thailand, Tonga, Ukraine, United Arab Emirates, Uruguay, US Virgin Islands, Uzbekistan, Vanuatu, Vietnam