The Joint Pan-London Overview & Scrutiny Committee to Review 'Healthcare for London' is a cross-borough body responsible for scrutinising proposals and developments related to the 'Healthcare for London' initiative. It examines how these changes will impact residents across multiple London boroughs. The committee's role is to provide independent oversight and make recommendations to ensure that healthcare services are effective and meet the needs of the public. It does not have executive decision-making powers but influences policy and service delivery through its review process.