Road rage killer Kenneth Noye is due to find out how many years he must spend behind bars before he can apply for release on parole.
Noye, now 63, was jailed for life at the Old Bailey in 2000 for the stabbing murder of 21-year-old Stephen Cameron on the M25 at Swanley in Kent in 1996.
His minimum term was later set at 16 years in 2002 by the then Home Secretary David Blunkett.
Tariffs are now set by judges - and lifers who were notified of their minimum term by a Home Secretary can apply to the High Court for a review.
A decision in Noye's application to have his minimum term reviewed will be announced by Mr Justice Simon at Newcastle Crown Court.
A reviewing judge will take a number of factors into account, including impact statements from bereaved relatives, the mitigating and aggravating features of the case, and also whether enough "exceptional" progress has been made in prison to justify a reduction.
The options open to a judge are to rule that a tariff must remain the same, or should be reduced - but the term imposed by a Home Secretary cannot be increased.
Even if a minimum term is cut an offender may still have to serve many years more, as he or she will not be released until they are no longer regarded as a danger to the public.
Noye fled to Spain after the stabbing but was extradited in 1998.