THE deportation of 84 Vietnamese will go ahead today despite a last-minute rethink and a revised timetable giving Hong Kong officials more leeway. To avoid publicity, the group is scheduled to be moved before sunrise from Victoria Prison to Kai Tak airport. The returnees are scheduled to leave Hong Kong an hour earlier - at 8 am instead of 9 am - to allow more daylight for negotiation should trouble develop in Vietnam. The territory is keen to avoid a repeat of last week's scenes when Vietnamese authorities protested after Hong Kong security forces forcibly removed boat people from the aircraft at Hanoi airport. An extra Security Branch official has been assigned to the escort detail today to accompany the usual lone officer, but the Government said yesterday instructions had not been modified. The British Embassy is despatching its deputy head of mission to the airport in an effort to ease Vietnamese concerns following last week's confusion. Stephen Turner is expected to play a key role in a decision to use force again and will liaise with the Vietnamese Interior Ministry. Hanoi has indicated it could refuse to accept boat people removed by force. Last Tuesday, a 10-hour diplomatic standoff developed when the chartered Royal Brunei 767 landed in Hanoi and 27 of 85 boat people refused to leave. More than a dozen returnees, including several women and a baby, displayed welts and bruises after being carried off and pushed to the tarmac. The Vietnamese Government has not released an official statement on its concerns, but an Interior Ministry official was upset after the operation. 'This is just unacceptable. The Hong Kong and British side did exactly what they said they would not do,' the official said. A similar incident occurred in June. In today's operation, the 84 deportees are scheduled for removal from Victoria Prison at about 5.30 am. Refugee Concern lawyer Pam Baker said she was worried the Government was going ahead in the light of last week's opposition. 'I would not be at all surprised to see the plane return with Vietnamese still on board,' Ms Baker said. Investigations have yet to determine the cause of injuries suffered by a six-month-old girl during last week's forced repatriation. The South China Morning Post last week photographed a wound the size of a tennis ball on the chest of Thuong Ly as she sat with her mother on the tarmac. A British Embassy spokesman in Hanoi said inquiries had confirmed Ly was injured, but the wound was an abrasion, not a bruise. The mother had not laid a complaint.