The new England head coach could yet look to add two more new faces to his set-up before next month's Six Nations opener against Scotland.
Saracens' Ian Peel will be under consideration as a potential addition as scrum coach. And Northampton's Sam Vesty will be an option to take an attack-based role.
Matt Proudfoot, Brett Hodgson and Danny Kerry have all left the England backroom staff. Forwards coach Richard Cockerill and attack specialist Martin Gleeson currently remain in the England set-up, but further changes could still be on the cards.
Proudfoot helped South Africa claim World Cup glory in 2019 before switching allegiance to England under Eddie Jones.
Hodgson was due to replace Anthony Seibold as Jones' defence coach for the Six Nations, but ultimately never even properly started that role. Jones was sacked in early December after England's worst calendar-year run since 2008, with Borthwick quickly recruited as his replacement.
Borthwick will have just nine Tests to prepare England for the autumn World Cup in France, starting with hosting Scotland at Twickenham on Saturday, February 4.
The ex-England Test captain has brought Kevin Sinfield with him as his right-hand man, with the duo leaving Leicester after guiding the Tigers to the 2022 Gallagher Premiership title.
Sinfield's status as a definite number two represents a departure from Jones' approach of retaining near total control as head coach elevates from his assistants.
Rugby League great Sinfield's fiercely loyal temperament found major favour among Leicester's players, and is set to have similar impact at Test level.
Borthwick was at pains to highlight the importance of pastoral care for his players on his RFU unveiling before the turn of the year. And Sinfield heartily echoed that approach when speaking on Tuesday, for the first time since his England appointment.
Taskmaster Australian boss Jones' famed authoritarian approach paid early dividend with England, but had slipped in the last 18 months.
Borthwick and Sinfield have clearly set part of their agenda to uphold duty of care to the players, spanning everything from safety and player welfare to mental wellness. Add in a naturally fresh take on selection, and it is easy to see how and why England’s players can be excited by their new bosses.
“For me, national teams across different sports, there have been times when players have gone into camp, and found it difficult to be in there, and not been able to be themselves," said Sinfield.
“Steve will show players how much he cares about them and he’ll allow them to be themselves, and the players understood that from the last two days.”