Paddington. There are slower trains from Waterloo.
Yes
London Paddington. Catch a train heading for Bristol Temple Meads.
Euston
Kings Cross Station
Catch a train from London (Euston) to Worcester (Foregate Street).
catch an east midlands train to London st pancras, then catch a eurostar to brussels zuid (brussels south), then catch a thalys train to Amsterdam
No. You will have to go to Paddington to catch a train to Oxford.
About 3 hours 40 minutes depending on which train you catch.
It varies between 24 and 53 minutes depending on which train you catch.
The 7.27 from Sheffield arrives at London St Pancras at 09.34
Take the London Underground (the Tube) on the Jubilee line to North Greenwich.
London, Exeter