This year, Sir Roger Moore is celebrating his 20th anniversary with UNICEF.
Sir Roger became a UNICEF Goodwill Ambassador in 1991. In two decades he has seen first-hand many examples of the extraordinary changes UNICEF is making to children's lives worldwide.
This photo gallery shows Sir Roger on some of the many field trips he's taken with UNICEF during the past 20 years.
Sir Roger Moore undertook a five-day mission to Ghana in 2000. This photo shows Sir Roger Moore and Lady Moore at Elmina primary school, Cape Coast, Ghana in 2000.
©UNICEFUK/2000/Tom Craig
Sir Roger Moore undertook a five-day mission to Ghana in 2000. He attended a national immunization campaign, and visited with chiefs of various communities in rural areas. Here Sir Roger Moore gives a child polio vaccine.
©UNICEFUK/2000/Tom Craig
Sir Roger Moore sings along with a crowd of Zambian children who are singing about AIDS. During his visit to Zambia in 2002, he lobbied support for food relief and for antiretroviral drugs to treat children and mothers infected by HIV/AIDS.
©UNICEFUK/2002/Sarah Epstein
Sir Roger Moore visits Mexico in 2004 to commemorate the tenth anniversary of the UNICEF British Airways Change for Good® programme, which raised more than £15 million for children worldwide.
© UNICEF UK/2004/Kate Walton
Sir Roger Moore visits a children’s housing project in Mexico in 2004. His visit helped promote UNICEF-supported education activities, in particular those involving street children who are among the least likely to receive an education.
©UNICEF UK/2004/Kate Walton
Sir Roger Moore speaking to children about their experience about food shortages and HIV/AIDS in the 2002 crisis in Zambia. In early November 2002, Sir Roger Moore travelled to Zambia to see first hand how the food shortages and HIV/AIDS were affecting Zambian families.
©UNICEFUK/2002/Sarah Epstein
Sir Roger Moore and Lady Moore visited a number of UNICEF-supported projects in Accra, Ghana, in 2000. Here Sir Roger Moore is at a pre-school crèche in Accra, Ghana.
©UNICEFUK/2000/Tom Craig
Sir Roger Moore on an advocacy mission to the former Yugoslav Republic of Macedonia in May 1999, visiting UNICEF-supported projects in refugee camps and local communities. Sir Roger Moore signs an autograph for a Kosovar refugee girl outside a UNICEF "tent school" in the Cegrane camp in north-west Macedonia.
©UNICEF/HQ99-0398/ MARK THOMAS
Sir Roger Moore and Lady Moore visited Kazakhstan in November 2010. Here they are surrounded by children with learning disabilities.
©UNICEF/HQ/2010/Giacomo Pirozzi