Gatwick Express is the simplest option from Victoria with dedicated luggage space and onboard info screens

https://milokumr571.theglensecret.com/gatwick-express-timetables-fares-and-when-it-s-worth-it-2

Gatwick Express is the simplest option from Victoria with dedicated luggage space and onboard info screens. It costs more but minimizes stops and confusion for first-time visitors.