You can't travel directly from Euston Square station to Victoria. If you go to Euston Station - a short walk - it's only four stops on the Victoria line.
Gatwick Express. The train goes to Victoria Station and the journey takes about 30 minutes.
Take the Gatwick Express (overground) to London Victoria Rail Station. Transfer to Victoria underground station (same building) and take the Victoria Line north to Oxford Circus tube station. Transfer to the Central Line (same building) and travel west to Northolt Underground (tube) station. You might be able to buy a through ticket at Gatwick but if you can't, buy a ticket to Victoria and then another at Victoria underground to Northolt.
The station shuts at around 1. Only the bit near the Gatwick express platform is open throughout the night. You wont have a chance to sleep in the station.
With difficulty. You will have to take the overhead train from Colchester to Liverpool Street Station, then the underground to Victoria Station and then the overhead to Gatwick.
I will be near hammersmith station on the tube line and want to go to Victoria station to catch a bus to Gatwick Airport
By train. There is a train station in the South Terminal building with direct services to Victoria. The Gatwick Express is a fast well-appointed service. Southern Trains also run a service that takes about 20 minutes longer and costs half as much. If you arrive at the North Terminal, there is a rapid transport (monorail) system that takes you the the train station in South Terminal.
Take the train from Cardiff Central to London Paddington, take the Circle Line to Victoria station, and catch the Gatwick Express to Gatwick Airport.
About 35 miles and there is a very good train service which runs between Gatwick Airport and Victoria Station in London.
By train, take any northbound train from the station (don't take from the Gatwick Express, or any train destined for Reading) and get off at East Croydon.
what is the best way to greenwich from gatwick airport
There is a fast train service from Victoria Station.
There is a railway station right in the airport (terminal 1) with an express service to Victoria station in london. Then by tube to oxford circus station. Approx one hour, plus up to 30 minutes wait for train at Gatwick. Average time 75 mins. note. it could take much longer by surface means unless you travel between midnight and 5 a.m.