Train services on the Brighton line have returned to normal after nine days of major engineering work.
The line was closed on 16th February between Three Bridges and Brighton and Three Bridges and Lewes until 25th February.
A fleet of 250 buses were laid on in the biggest bus replacement operation in the country.
- WATCH: Time lapse of work completed in Balcombe in Sussex during major engineering work
Network Rail says new signals, track and work to tunnels should bring improvements for passengers.
The engineering work was part of a £300 million government-funded programme to tackle delay hotspots and hopes to boost reliability of the railway in the south east, including the expanded Thameslink network.
Network Rail says this section of railway was 'responsible for more delays to Southern, Gatwick Express and Thameslink passengers than any other'.
Despite completion of engineering work, Network Rail has warned passengers of four planned weekend closure between Three Bridges and Brighton in March and April.
- Saturday 2 & Sunday 3
- Saturday 23 & Sunday 24
- Saturday 30 & Sunday 31
- Saturday 6 & Sunday 7
- Sunday 5 (between 1.20am-9.30am)