The Marshlink line is easily accessible by road, using the A22 to Eastbourne, the A21 to Hastings, or the M20 to Ashford. The A259 south coast trunk road runs almost parallel to the line.
The Marshlink is very well served by local Stagecoach buses, see www.traveline.info
Southeastern operate high speed trains which means Ashford is just 37 mins from St Pancras international in London, and there is a direct service to Hastings from Charing Cross, Waterloo East, London Bridge and Cannon Street stations. Southern services run from London Victoria, Clapham Junction, East Croydon and Gatwick Airport direct to Eastbourne and Hastings.
There are train links from Gatwick Airport direct to Brighton, Eastbourne and Hastings.