About 3 hours
A typical train journey from Brighton to London Victoria would be roughly 1 hour 15 minutes.
Journey time would be around 6 hours and 20 minutes
No, in order to go to Manchester by train, you would have to travel along the West Coast main line.
12
From London you would go from Euston station.From Edinburgh you would go from Waverleystation.From Cardiff you would go from Cardiff Centralstation.
It would have taken 9 hours by train.
Trains don't go from Kings Cross to Manchester. They leave from London Euston which is a 10 minute walk from Kings Cross. The journey from London Euston to Manchester Piccadilly takes around 2 hours 10 minutes.
There isn't a direct route from Glasgow to Southampton. To make this journey, you would take the train from Glasgow Central Station to London Euston, and then from London Euston to Waterloo, and then from Waterloo to Southampton Central. Train times vary and it is best to look up close to booking your journey on a website like The Train Line, especially since this journey covers various train operators.
There is no direct train service between London and Bratislava - you would have to change trains at least twice and the journey would take about 3 days, as opposed to 3 hours if you fly there.
There is no direct service between London and Malaga. you would have to change twice - probably Paris and Madrid would be best. The journey would take about 24 hours.
By train - catch the next available train into Sheffield and get the direct train to the airport from there. My advice would be, buy your two tickets well in advance, and separately for the two stages of your journey. On Foot - very cheep indeed but it would take a while.
It would depend on how long the journey was.