I often wonder what significant anniversaries are due at some point in the future as some of them might be of interest as triggers for blog posts or visits somewhere. However, it is often difficult to find out quickly what events have significant anniversaries - hence this section on the website.
By "significant anniversaries", I mean dates that are not, for example, the 73rd anniversary of something, but the 50th, 100th, 200th etc.
It should help to flag up interesting events.
Significant anniversaries during May 2022
| Anniversary | Details |
| 1st | A self-driving bus begins trials in Cambridge, the first service of its kind, running autonomously for 24 hours a day. (27th May 2021) |
| 1st | The total number of COVID vaccines administered in England exceeds 50 million. (22nd May 2021) |
| 1st | The UK scores zero points in the grand final of the Eurovision Song Contest with James Newman's entry 'Embers', marking the first time the contest has seen an entry that did not score any points since the new voting system was introduced in 2016. (22nd May 2021) |
| 1st | The BBC publishes Lord Dyson's independent investigation into the circumstances around the 1995 Panorama interview with Diana, Princess of Wales. The inquiry finds Martin Bashir guilty of deceit and breaching editorial conduct to obtain the interview. (20th May 2021) |
| 1st | Stage three of the government's conditional lockdown easing goes ahead, enabling larger numbers of people to gather together, including at indoor venues. (17th May 2021) |
| 1st | The final Debenhams store is closed, after more than 240 years in business. The company continues to trade online. (15th May 2021) |
| 1st | COVID-19 in the UK: The number of people having received their second dose of a vaccine exceeds 20 million. (15th May 2021) |
| 1st | Prince Michael of Kent is accused of using his royal status to sell access to Russian President Vladimir Putin's regime, following an investigation by Channel 4 News and The Sunday Times. The Prince denies the allegations. (9th May 2021) |
| 1st | Angela Rayner is removed from her roles as the Labour Party's chair and national campaign coordinator by Keir Starmer, following the local election results. (8th May 2021) |
| 1st | 2021 United Kingdom local elections: Elections for local councils and directly elected mayors are held in England and police and crime commissioners in England and Wales, including many which were originally due to take place in May 2020 but were postponed due to the COVID-19 pandemic. (6th May 2021) |
| 1st | 2021 Senedd election: Labour keep hold of the Senedd and match the party's best ever result, with 30 out of 60 seats. (6th May 2021) |
| 1st | The BBC reports that almost all 50 of the UK's biggest employers do not plan to return staff to the office full-time, but will instead favour a new "hybrid" of in-person and remote work. (6th May 2021) |
| 1st | A protest over post-Brexit rights by French fishermen at Saint Helier, Jersey, is brought to an end, following talks to resolve the dispute. Two Royal Navy patrol vessels remain in place around the island. (6th May 2021) |
| 1st | Foreign Secretary Dominic Raab tells the BBC that Iran's treatment of Nazanin Zaghari-Ratcliffe "amounts to torture", as diplomatic efforts to free the 42-year-old Briton continue. (2nd May 2021) |
| 5th | Manchester Arena is attacked by a suicide bomber following a music concert by American singer Ariana Grande, resulting in multiple casualties. It is the most deadly attack in the UK since the 7 July 2005 London bombings and the first in the North of England since the IRA bombing of Manchester in June 1996. (22nd May 2017) |
| 5th | Computers across the United Kingdom are hit by a large-scale ransomware cyber-attack, causing major disruption. (12th May 2017) |
| 10th | The Royal Navy's first female warship commander, Commander Sarah West, takes up her post on HMS Portland at Rosyth. (22nd May 2012) |
| 10th | The Olympic flame arrives in Cornwall on board a flight from Athens, ready for the torch relay ahead of the 2012 Summer Olympics. (18th May 2012) |
| 10th | Boris Johnson is re-elected as Mayor of London with 51.5% of the vote.Ken Livingston subsequently says it would be his 'last election'. In the London Assembly, Labour becomes the party with the greatest number of seats, with minor losses for the Conservatives and Liberal Democrats. The British National Party loses its only seat. Of 25 seats, the final tally stands at: Labour 12, Conservatives 9, Liberal Democrats 2, Green 2. (4th May 2012) |
| 20th | Falkirk Wheel boat lift opens in Scotland, also marking the reopening of the Union Canal for leisure traffic. (24th May 2002) |
| 50th | The Angry Brigade goes on trial over a series of 25 bombings throughout the UK. (30th May 1972) |
| 50th | Edward, Duke of Windsor, dies of cancer in France at the age of 77, 35 years after his abdication as king. (28th May 1972) |
| 50th | The final stretch of the M6 motorway opens between junctions 6 (Spaghetti Junction) and 7 north of Birmingham, with the fully operational motorway stretching more than 200 miles from Rugby to Carlisle, more than a decade after the first sections were opened. (24th May 1972) |
| 60th | The new Coventry Cathedral is consecrated. (25th May 1962) |
| 70th | The concept of the integrated circuit, the basis for all modern computers, is first published by Geoffrey W.A. Dummer. (7th May 1952) |
| 70th | The world's first ever jet airliner, the De Havilland Comet 1 makes its maiden flight, from London to Johannesburg. (2nd May 1952) |
| 80th | World War II: 1000 British bombers launch a 90-minute attack on Cologne, Germany. (30th May 1942) |
| 80th | The Radio Doctor (Charles Hill) makes his first BBC radio broadcast giving avuncular health care advice. (6th May 1942) |
| 90th | James Chadwick discovers the neutron. (10th May 1932) |
| 90th | Protestors and police clash in Hyde Park, London, during a May day protest against Japan's attitude towards China when they try to march on the Japanese Embassy. (1st May 1932) |
| 125th | Dracula, a novel by Irish author Bram Stoker is published. (26th May 1897) |
| 125th | The Blackwall Tunnel under the River Thames is officially opened (22nd May 1897) |
| 125th | Oscar Wilde is released from Reading Gaol. (19th May 1897) |
| 275th | War of the Austrian Succession: A British fleet under Admiral George Anson defeats the French at the First Battle of Cape Finisterre. (14th May 1747) |
| 350th | John Maitland becomes Duke of Lauderdale and Earl of March. (2nd May 1672) |
Alternatively, see all anniversaries for this month.
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