ATC Watcher
Stansted Express to Liverpool Street every 15 mins most of the day; takes 45 mins
Tube Central and Victoria lines to Victoria - about 30 mins or so
Gatwick Express every 15 mins takes 30 mins
So 2 hours at least if no problems
Variation 1:
Get off Stansted Express at Tottenham Hale and take Victoria line to Victoria. Should take about same time. Just seems longer.
Variation 2:
At Liverpool Street, walk to Moorgate tube 5 mins (2 hours if you don't know the way)
Northern Line to London Bridge - 10 mins (it's running again?)
Thameslink to Gatwick, 2 x hour, about 40 mins
Stansted Express is currently replaced on Sundays (and random days) by buses - they take 75 mins and leave every 10 mins.
hope I havent bored you too much
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