You can't travel to London from any part of Kent by tube. You could take a bus but it depends on which part of Kent you are travelling from to tell the time it would take. It takes about 4 and 1/2 hours to get to London my train.
Anything from 5 minutes to 3 hours because London & Kent are next to each other. So you need to be specific about your start and end points
About 45 minutes.
Where abouts in Kent? Suggest you try using the AA route planner http://www.theaa.com/route-planner/index.jsp
About 3 hours to drive to central London.
It depends on which part of London you are travelling from but around two hours from central London.
If you follow the M25 from Oxford to Kent, bypassing London, you can reach your destination in 2 hours and 12 minutes (on average) travelling an approximate 118 miles depending what part of Kent you want to go to.
From central London (Trafalgar Square) to central Rugby is 1 hour 45 minutes / 84.90 miles using the fastest, legalroute
a long way away. i think the same distance from london to France
It depends on which part of London and which part of Kent and your form of transport.
15 Minutes.
London covers a large area so it will depend on which part of London you are starting from and traffic conditions, but about two hours from central London.
There are no direct trains. You will have to change trains and stations in Central London.