A number of works are taking place across the South East rail network, operators warn.
National Rail warns of disruption until the end of Monday after weekend work not finished in time.
Rail passengers across Sussex are being warned to expect disruption on Monday morning, after planned weekend engineering work overran.
Buses will replace trains between Brighton and Worthing/ Littlehampton all day on Sunday. A spokesperson for Southern Rail said: “Engineering works will affect services between London Victoria and ...