It is 37 miles from Westminster Bridge to Maidstone, Kent.
You can't. The London Underground and London Buses only go as far as the suburbs. You can get direct, mainline trains from all major towns in Kent to central London, including Ashford, Chatham, Margate/Ramsgate, Maidstone, Folkestone, Tunbridge Wells and Dover. The fastest trains go to London St Pancras, others go to London Charing Cross and London Bridge stations.
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.
That all depends on where in London and where in Kent you are travelling. Kent is just across the boundary and adjacent to South London.
Hackney is a London Borough and Kent is a county. Which part of Kent?
It's about 70 miles.
Coleman Street is IN central London, not far from the Bank of England so it depends on which part of central London you are interested in.
The county of Kent adjoins London so you could just step over the border. You will have to be more specific and say where in Kent you want to measure the distance from.
South East. Kent is a county and has a border with London so you may not have to travel very far.
About 85 miles.
Mile End in London to Central London is about 5 miles.
A footstep or less, as Kent and Surry are next to each other.
check a map, or a train or bus schedule.