The London Organising Committee for the Olympic Games unveils the official logo for the 2012 Summer Olympics and 2012 Paralympics, to be held in London, England.
- Thousands, including some from Australia, protest in London, England, against the renewal of the United Kingdom's Trident nuclear deterrent system, the largest anti-nuclear rally since 1983. Leader of the Labour Party Jeremy Corbyn, Scottish National Party leader and First Minister of Scotland Nicola Sturgeon, the Welsh Plaid Cymru Party, and the Green Party participated in the march. A parliamentary vote on renewing Trident is expected this year.
- Australian entertainer Rolf Harris is convicted in London, England, of 12 counts of indecent assault against young girls between 1968 and 1986. The 84-year-old is to be sentenced on Friday 4 July.
- Film director and newspaper columnist Michael Winner dies aged 77 in Kensington, London, England.
- Elizabeth II addresses her Commonwealth subjects in her annual Royal Christmas Message, referring to the 2012 Summer Olympics in London and the "humbling" experience of her diamond jubilee celebrations. Her speech - the first to be broadcast in 3D - does not include mention the recently-announced pregnancy of Catherine, Duchess of Cambridge, wife of her eldest grandson.
- The Olympic Torch arrives in London for the final stages of the UK-wide relay ahead of the 2012 Summer Olympics.