1. Longyearbyen, Svalbard (Norway): UTC+01:00 (1 hour ahead of London)
2. Nuuk, Greenland (Denmark): UTC-03:00 (3 hours behind London)
3. Iqaluit, Nunavut (Canada): UTC-05:00 (5 hours behind London)
4. Fairbanks, Alaska (USA): UTC-09:00 (9 hours behind London)
5. Murmansk, Russia: UTC+03:00 (3 hours ahead of London)
6. Tromsø, Norway: UTC+01:00 (1 hour ahead of London)
7. Resolute, Nunavut (Canada): UTC-06:00 (6 hours behind London)
8. Yellowknife, Northwest Territories (Canada): UTC-07:00 (7 hours behind London)
9. Tiksi, Russia: UTC+11:00 (11 hours ahead of London)
It's worth noting that some Arctic regions also observe daylight saving time (DST) during certain periods of the year, which can temporarily adjust the time difference by one hour.