Depends on the type of boat and where you're starting from:
Depends on where you start
It depends if you are on an airplane, boat, or a car.
There is no canal between London and Southampton.
Oars and oars
6 weeks
How long it takes!
It can't be driven so it takes no time. You need a boat.
a long time!
how long will it take a small boat from england to Greece
You can't take a train directly from the Shetland Islands to London. You can't even fly directly between Shetland and London. You could travel by boat from Shetland to Aberdeen and then take a train or fly from there to London or you could fly from Shetland to Edinburgh and either fly or take a train from Edinburgh to London.
You can't travel directly from Amsterdam to London by ferry because London doesn't have a ferry port. You would have to travel from Amsterdam to Hook of Holland by train (or drive), catch a ferry to Harwich and then take a train (or drive) to London.
People from Switzerland generally fly to Canada because it takes so long to take a boat from London or Paris after driving or taking a train there.