The day before Baroness Thatcher's funeral the coffin will be transferred to the Chapel of St Mary Undercroft in the Palace of Westminster. There will be a short service following its arrival before the coffin rests in the chapel overnight.
A Downing Street statement said: "On the day itself, the streets will be cleared of traffic and the coffin will travel by hearse from the Chapel of St Mary Undercroft in the Palace of Westminster to the Church of St Clement Danes, the RAF Chapel, on the Strand.
"At the church the coffin will be transferred to a gun carriage drawn by the King's Troop Royal Artillery. The coffin will then be borne in procession from St Clement Danes to St Paul's Cathedral. The route will be lined by tri-service military personnel."