If you have lots of luggage, consider a coach or taxi to Gatwick for easier boarding

https://telegra.ph/Central-London-to-Gatwick-Airport-Late-Night-and-Early-Morning-Travel-08-21-2

If you have lots of luggage, consider a coach or taxi to Gatwick for easier boarding. Trains can be crowded at peak times; board at the front or rear cars for more space.