William and Catherine are joint patrons of NHS Charities Together, and the Palace said the engagement took place to “acknowledge the incredible work of NHS staff over a difficult winter period”.
The couple surprised healthcare staff on their tea break and chatted to them about the pressures they faced during the winter virus season.
Staff were gathered in a break room paid for by Imperial Health Charity, which is a member of the umbrella organisation NHS Charities Together, and supports all five of Imperial College Healthcare NHS Trust’s hospitals through grants, arts and volunteering.
William and Catherine went on to join a roundtable with NHS charity chief executives, trustees, policymakers and philanthropists to discuss the role of philanthropy in the NHS.
The couple became patrons of NHS Charities Together in 2020 at the height of the Covid pandemic.
The organisation represents more than 220 NHS charities from all NHS Trusts and Health Boards across the UK.