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Motorists are set to face long delays on a major road in south London from next month as huge works are set to begin.

Work will start in the coming weeks to transform travel along the A23 Streatham Hill, with improvements for walking, cycling, and public transport users.

Work will start in the coming weeks to transform travel along the A23 Streatham Hill, with improvements for walking, cycling, and public transport users.

Transport for London (TfL) today (16 July) warned of lane closures on the A23 through Streatham from 4 August until autumn as work begins on the first phase of a major scheme to transform travel, walking and cycling in the area.

Transport for London (TfL) is due to begin construction work in the coming weeks on a major new scheme to make A23 Streatham Hill safer and better for residents and visitors.

TfL is due to begin major road works on a scheme intended to make the A23 Streatham Hill “safer and better for residents and visitors”, the transport authority said today.

Anyone familiar with the A23 running through Streatham Hill will recognise it as a hectic scene.

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On Monday 21 July 2025, we will start work on a new permanent road layout for the A23 Streatham Hill. It will include protected cycle lanes and dedicated bus lanes in both directions.