Motorists are being advised to avoid Westminster and the City of London on the day of Baroness Thatcher's funeral next week.
On Wednesday April 17 a number of roads will be closed and some bus services will be diverted, Transport for London (TfL) said.
Blackfriars and Westminster bridges will be closed and some Barclays Cycle Hire docking stations will be suspended. But all Tube, London Overground and Docklands Light Railway services will run normally.
The bus diversions will begin from 6am and the road closures from around 7am. Among roads that will be closed will be The Strand, Fleet Street, Ludgate Hill, Whitehall, Kingsway and The Mall.
TfL said today: "The funeral is ceremonial and will include road closures and bus diversions in parts of central London.
"TfL is working with the Government, Metropolitan Police, Westminster Council and other agencies to ensure people travelling to and from the area can do so quickly and safely and to minimise disruption caused by road closures and diversions.
"Whether travelling for the funeral or for other journeys to central London people are advised to check the TfL website to plan their route and for updates on service changes that may affect their journeys."