50 miles taking this route:
about 60 miles
About 70 miles.
Depends, of course, where in East Sussex. From Eastbourne to the outskirts of London (Croydon, for example), you can drive it comfortably in one hour 20. Using the train, the journey takes around one hour 30 to London Victoria (which is reasonably central).
Brighton, East Sussex, England - 22 square miles
Depending on which route you take, 14.5 miles to around 16 miles.
If you are refering to Crawley, Sussex, you are way off. Although it is not a part of London, it was built for a settlement to ease congestion in London, I believe. It is many miles North of Brighton, South of Horley in Surrey, North-east of Horsham. It is also just south of London Gatwick Airport, on the Surrey-West Sussex Border but on the Sussex Side. I hope my answer has helped you slightly. Good Luck.
66 miles
42 miles
90 miles following M1 SOUTH towards LONDON, via A45 (and M45) around Coventry.
28 miles
About 60 miles.
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