Ongoing roadworks on a key city centre route coupled with tonight's Saints game at St Mary's could lead to delays across the city, the council has warned.

Fans travelling to and from the stadium tonight should expect roads to be busier than usual due to the ring road between Charlotte Place and the Civic Centre being closed clockwise.

It comes after a major project to redesign the layout of the road got underway yesterday.

Saints will host Watford for the FA Cup fourth round replay following a 1-1 draw at Vicarage Road on Sunday. Kick-off is at 7.45pm.

In a tweet, a council spokesperson said: "#SaintsFC are at home today, playing @WatfordFC, kick off at 19:45.

"Due to our Ring Road works in the City Centre, the roads will become busier before and after the match with supporters making their way to and from St Mary's Stadium."

The warning comes after the owner of a dry cleaners on Commercial Road said the temporary one-way system could result in traffic chaos across the city during match days.

Works to change the layout of the ring road started on Monday and are set to last until the summer. They form part of the wider £57m government-funded Transforming Cities Fund.

The council says they will lead to improved journey times for motorists, more reliable buses at London Road and West Park Road and safer crossings for pedestrians and cyclists.