Five senior British police officers begin work this week reviewing the actions of NSW police during the deadly Lindt Cafe siege, ahead of the inquest's final hearings.

The British team, which recently landed in Sydney, will examine witness statements, forensic evidence and CCTV footage before reporting to State Coroner Michael Barnes.

British police officers will review the conduct of NSW officers who dealt with the Lindt Cafe siege. Credit:AP

The adequacy of the police response is one of the final questions to be addressed by the inquest into the deaths of cafe manager Tori Johnson, patron Katrina Dawson and gunman Man Haron Monis.