The judge in the Stephen Lawrence murder trial is to begin his summing up to the jury.
Justice Treacy will be the only judge sitting at the Old Bailey which has been especially opened during the holiday period.
Jurors have been told they may need to bring extra clothing as the boiler may take time to heat up.
The four women and eight men have been listening to five weeks of evidence.
Gary Dobson, 36, and David Norris, 35, both from south London, deny murdering the black teenager in April 1993.
Mr Lawrence was stabbed near a bus stop in Eltham, south London, by a racist gang.
The prosecution says the two men were part of the gang and fibres, a blood spot and a hair found on clothes seized from their homes link them to the killing.
But the defence says the items were contaminated over the years they were held by police, and the defendants are innocent.