Thousands expected in Cornwall for Europe’s first satellite launch

theguardian.com

Related discussion from a couple months ago, with forty-gour comments:

I'm still not getting why this can't 'launch' from LHR. It was built in Long Beach, California, so it's already travelled a long way.

French Guyana is Europe

You may have meant that French Guiana is part of political France, but geographically it is not in Europe.

To cite the French WP: "La Guyane, est une région monodépartementale française située en Amérique du Sud"