The British government promises the U.S. that British troops in Malaysia will stay until more peaceful conditions occur in the region.
Britain's Labour Party unexpectedly retains the parliamentary seat of Hull North in a by-election, with a swing of 4.5% to their candidate from the opposition Conservatives, and a majority up from 1,181 at the 1964 General Election to 5,351.
March 20 – Football's Jules Rimet Trophy is stolen while on exhibition in London; it is found seven days later by a mongrel dog named "Pickles" and his owner David Corbett, wrapped in newspaper in a south London garden.
March 22 – In Washington, D.C., General Motors President James M. Roche appears before a Senate subcommittee, and apologizes to consumer advocate Ralph Nader for the company's intimidation and harassment campaign against him.
May 3 – Swinging Radio England and Britain Radio commence broadcasting on AM, with a combined potential 100,000 watts, from the same ship anchored off the south coast of England in international waters.
The Moors murders trial ends with Ian Brady being found guilty on all three counts of murder and sentenced to three concurrent terms of life imprisonment. Myra Hindley is convicted on two counts of murder and of being an accessory in the third murder committed by Brady, and receives two concurrent terms of life imprisonment and a seven-year fixed term for being an accessory.
Topeka, Kansas is devastated by a tornado that registers as an "F5" on the Fujita scale, the first to exceed US $100 million in damages. Sixteen people are killed, hundreds more injured, and thousands of homes damaged or destroyed, and the campus of Washburn University suffers catastrophic damage.
Gwynfor Evans, President of Plaid Cymru, becomes Member of the United Kingdom Parliament for Carmarthen, taking the previously Labour-held Welsh seat at a by-election with a majority of 2,435 on an 18% swing, and giving Plaid Cymru its first representation at Westminster in its forty-one year history.
July 16 – British Prime Minister Harold Wilson flies to Moscow to try to start peace negotiations about the Vietnam War (the Soviet government rejects his ideas).
July 22 – Following the death of engineer Hsu Tsu-tsai in The Hague, the Chinese government declares Dutch delegate G. J. Jongejans persona non grata, but tells him not to leave the country before his fellow Chinese engineers have left the Netherlands.
While waiting at a bus stop Ralph Baer, an inventor with Sanders Associates, writes a four-page document that lays out the basic principles for creating a video game to be played on a television: the beginning of a multibillion-dollar industry.
LSD is made illegal in the United States and controlled so strictly that not only are possession and recreational use criminalized, but all legal scientific research programs on the drug in the US are shut down as well.
The Love Pageant Rally takes place in the Panhandle of Golden Gate Park, a narrower section that projects into San Francisco's Haight-Ashbury district.
October 7 – The Soviet Union declares that all Chinese students must leave the country before the end of October.