The review had been commissioned by the NMC following the death of a newborn baby earlier this year.
The island’s entire health board unanimously agreed to resign last week, despite insisting that reports had not uncovered any ‘significant problems’ in midwifery care.
The infant death rate for Guernsey and Alderney in the period 2010 to 2012 was one per 1,000 – significantly lower than the most recent comparison rate for England and Wales, which is 4.3 per 1,000.
Guernsey health authorities have agreed to make “immediate improvements” to services.
They have agreed to recruit a medical director, a clinical director of maternity services and a clinical director of governance.
There will also be four midwives on every shift compared to three, while an additional midwifery clinical lead is being recruited, which will mean six working on the maternity ward at the Princess Elizabeth Hospital.
A supervisor of midwifery is also being recruited for six months, with 24/7 supervisory support available from Jersey.
The NMC said in a statement: ‘The evidence which was collected during the extraordinary review in Guernsey indicates serious concerns with the quality of supervision of midwives and the practice of midwifery on the Island.
‘This clearly could have an impact on the safety of the maternity services on the Island. Guernsey’s Health and Social Services Department has committed to take swift steps to mitigate against any possible risks to patients and the public.’
The NMC’s report on the review’s findings will be published towards the end of October.