Fisher will join the organisations on a nine-month secondment from her current role as chief executive of South West London ICB.

She will oversee the launch of West and North London ICB, which will come into effect from 1 April. It will be the largest ICB in England, strategically commissioning services for 4.5m Londoners across 13 boroughs.

Fisher brings with her a wealth of experience which will help support and guide the organisations during this important period. A nurse by background, Katie has more than two decades of senior leadership experience within the NHS, charitable organisations, and the private sector. Her previous roles include being chief executive at Ashford and St Peter's Hospitals, and at West Hertfordshire Hospitals NHS Trust.

Mike Bell, chair of North Central and North West London ICB, said: 'I am delighted that we will have the benefit of Katie's experience and leadership to take us through this important phase for North Central and North West London, and the launch of the West and North London Integrated Care Board from April.'

Fisher said: ‘I'm really pleased to be joining North Central and North West London at such an important point. I look forward to taking forward the merger and establishing the new West and North London ICB as a robust, progressive and impactful organisation, which is really making a difference to the lives of people across West and North London.'