Geneva is 1 hour ahead of London. London uses GMT/BST. Geneva uses CET/CEST. Both observe DST.
When it's 12:00 PM in London, it's 1:00 PM in Geneva.
Most hours work! With only a 1 hour difference, business hours overlap almost entirely.
Geneva is home to many international organizations. British Airways, Swiss, and easyJet operate frequent direct flights taking about 1.5 hours.