Sim is a Non-Executive Director and Deputy Chair on the Buckinghamshire, Oxfordshire and Berkshire West (BOB) Integrated Care Board (ICB), where she chairs the People and Remuneration Committees.
Sim is also a NED at Imperial College Healthcare Trust and London North West Hospital Trust which form part of the North West London Acute Provider Collaborative.
Sim is an advisor on Race to NHS Providers, and also mentors aspiring leaders.
Sim recently stepped down from the Court of Governors at the University of the Arts London where she was Vice Chair, also chairing the People and Remuneration Committees.
A strong supporter of the Arts, design and fashion, Sim is a Trustee for two Uk registered charities: the National Saturday Club and Smartworks.
Sim’s commercial background is Fashion Retail, where she spent 30 years working for some go the UK’s best loved High Street brands culminating in becoming Brand Director for the young fashion chain Miss Selfridge.