Today (Sunday 2nd May) I did a linear walk starting at Southease and finishing at Eastbourne and got the 6pm train to London Bridge aiming to get off at Three Bridges. The scrolling screen onboard said the train would go the direct route via Plumpton, but the onboard announcement said it was going via Brighton. It turned out the announcement was correct and it went to Brighton after leaving Lewes. This seems a rather roundabout route to get to London and I'm sure it didn't show that route when I initially looked up Eastbourne to Horsham train times on National Rail Enquiries. What was the reason for routing this service via Brighton? I've looked at the same route for next Sunday and it shows the direct via Plumpton route.