Abstract: This survey of over 2,000 people (carried out by Opinion Matters and weighted to be a representative sample of UK adults) was commissioned by the Holocaust Memorial Day Trust - the charity set up by Government to mark Holocaust Memorial Day. It shows that 64% of people polled either do not know how many Jews were murdered or grossly underestimate the number: 45% of those polled said they did not know how many people were killed, while one in five (19%) believe fewer than two million Jews were murdered. Despite the figures, the vast majority (83%) of respondents say it’s important to know about the Holocaust and that we can all learn lessons for today from the past (84%), while over three quarters (76%) believe more needs to be done to educate people about what happened. The Holocaust Memorial Day research was conducted by market research agency Opinion Matters and commissioned by the Holocaust Memorial Day Trust. Using an online methodology, Opinion Matters surveyed 2,006 nationally representative UK adults aged 16+. The respondents were randomly selected from an online market research access panel. Quotas were set to ensure the overall responses are representative of ONS UK population data based on age, gender and region.