Absolutely! Setting up your Cellesim eSIM before arriving at London Heathrow (LHR) or Gatwick (LGW) is highly recommended. You'll receive a QR code via email; simply scan it to install the eSIM profile. You can then activate it immediately upon landing, ensuring instant connectivity for maps and transport as you navigate into the city.
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Can I set up my London travel eSIM before I arrive at Heathrow?
Updated May 30, 2026
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