Baroness Thatcher's daughter Carol is expected to return to the UK tonight, her brother Sir Mark said.
Sir Mark left Lady Thatcher's Belgravia townhouse this afternoon after collecting flowers left outside the property.
Asked by reporters when his sister Carol would be returning to the UK, he said it would be "late, late this evening".
But he made no further comment on the plans for his mother's funeral.
Downing Street has released a detailed Order of Service for Baroness Thatcher's funeral on Wednesday.
The full details of Baroness Thatcher's funeral have been released by Downing Street.
Baroness Thatcher's daughter Carol has spoken publicly to thank everyone who sent messages of sympathy and support.