When can I use my mobile phone coming into or out of Kings Cross?

Just because I can never remember: a list of tunnels, station and landmarks heading north from Kings Cross station:

1. Kings Cross station
2. == tunnel ==
3. Channel Tunnel Rail Link viaduct
4. == tunnel ==
5. Emirates Stadium
6. Finsbury Park station
7. Harringay station
8. Bounds Green depot
9. Hornsey station
10. Alexandra Palace station
11. == tunnel ==
12. New Southgate station
13. == tunnel ==
14. Oakleigh Park station
15. New Barnet station
16. == tunnel ==
17. Hadley Wood station
18. == tunnel ==
19. Potters Bar station
20. Brookmans Park station
21. Welham Green station
22. Hatfield station
23. Welwyn Garden City station
24. Welwyn/Digswell viaduct
25. Welwyn North station=
26. == two tunnels ===
27. Knebworth station
28. Stevenage station

There's over 11 miles between the Potters Bar tunnels and the Welwyn tunnels.

If it's dark and you can't see where you are, then on an East Coast train going north, it normally take 20 minutes to get to Stevenage from Kings Cross.

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