Railway upgrades between London and Brighton have been completed.
More than 150 railway workers and engineers worked round the clock between Christmas Day and January 2 to upgrade the railway.
This was carried out by Network Rail as part of an £80m package of improvements.
Passengers have been faced with delays of up to 90 minutes during the work.
The improvements have been carried out in three locations.
They have included a new platform, track and signalling work at Gatwick Airport station.
The platform will include a new lift, escalators and a high level walkway.
The new platform will become operational in February and is hoped to reduce delays.
There has also been a major junction replacement at Stoats Nest, a major junction between Redhill and Purley.
New signalling between London Victoria and Battersea, at more than 70 locations.
Engineers have also repaired damage caused by the storms, including two landslips at Redhill and Coulsdon and flooding near Balcombe.
A landslip at Ockley will take longer to rebuild with services unlikely to resume until the end of January at the earliest.