Order a free UK SIM card with no long contract. Compare GiffGaff and Lebara for PAYG flexibility, SIM only savings, 5G coverage, EU roaming and international calling.
Choose the free SIM card that matches how you use your phone. Both providers offer no-contract options and simple activation.
GiffGaff runs on the O2 network and is popular for flexible goodybags, pay-as-you-go control, no contracts, 5G access where available and a strong UK community.
Lebara uses the Vodafone network and is a strong choice for affordable international calls, flexible SIM only bundles, free SIM delivery and no-credit-check setup.
A free SIM card is a low-risk way to switch mobile networks, test coverage and reduce your phone bill without committing to a long mobile contract. The best free SIM card depends on your area, data needs, calling habits and whether you call abroad.
Before ordering, compare network coverage, monthly bundle prices, international minutes, EU roaming policies, 5G support and whether your phone is unlocked. If you want more detail, read our free Lebara SIM card guide or compare all offers on the homepage.