Each year from 1991 onwards, the Team Leader has written a report on that year’s IMO for general distribution. All of these are available here (as produced by the Leaders without any subsequent editing for content; the versions published in the UKMT Yearbooks and elsewhere have generally been edited and cut in one way or another), as are some reports from previous years and some additional or unofficial reports and observations by other people. I am still seeking some reports from 1980 to 1983 inclusive to complete the collection. Additional unofficial reports are also welcome.

- Reports from 1967 to 1974 were published in Science Teacher. I have scanned them in and made them available here. I have been unable to locate the copyright holder of this periodical; if you believe you own the copyright, please let me know.
- Reports from 1967 and 1969 were also published in The Mathematical Gazette. I have scanned them in; by the kind permission of the Mathematical Association, they appear here.
- 9th IMO, Cetinje, Yugoslavia, 3–12 July 1967, report and solutions by N. A. Routledge in The Science Teacher.
- 9th IMO, Cetinje, Yugoslavia, 3–13 July 1967, report by N. A. Routledge in The Mathematical Gazette (original version available from JSTOR).
- 10th IMO, Moscow, USSR, July 1968, report by N. A. Routledge and David Monk in New Science Teacher.
- 11th IMO, Bucharest, Romania, July 1969, report by F. R. Watson and L. Beeson in New Science Teacher.
- 11th IMO, Bucharest, Romania, July 1969, report by F. R. Watson in The Mathematical Gazette (original version available from JSTOR).
- 12th IMO, Hungary, 1970, report by Bryan Thwaites and Margaret Hayman and solutions in Science Teacher.
- 13th IMO, Zilina, Czechoslovakia, July 1971, report by Frank Budden with photograph by Peter Reynolds and solutions in Science Teacher.
- 14th IMO, Poland, July 1972, report submitted by the Awards Committee of the Mathematical Association in Science Teacher.
- 15th IMO, Moscow, USSR, July 1973, report by F. J. Budden and solutions in Science Teacher.
- 16th IMO, German Democratic Republic, July 1974, report by David Monk in Science Teacher.
- Reports from 1975 to 1979 were published in Mathematical Spectrum. I have scanned them in; by the kind permission of the Applied Probability Trust, they appear here.
- 17th IMO, Bulgaria, 1975, report by John Durran. (A detailed analysis by Robert Lyness of Question 3 from 1975 appears in the Mathematical Gazette, volume 60 (June 1976), number 412, pages 90–99, available from JSTOR.)
- 18th IMO, Lienz, Austria, July 1976, report by Colin Goldsmith.
- 19th IMO, Belgrade, Yugoslavia, July 1977, report by Terry Heard.
- 20th IMO, Romania, 1978, report by John Hersee.
- See also Alan Dix’s memories of IMO 1978 (on his website).
- 21st IMO, London, United Kingdom, 1979, report by Colin Goldsmith.
- I would be interested to hear of any other published or unpublished reports on the UK at the IMO that may have appeared relating to the IMOs of 1967 to 1990.
- International Mathematical Competition, Mersch, Luxembourg, 8–13 July 1980, report by David Monk (scanned PDF). Also available for this event: the problems in English, French, Dutch, Serbo-Croat.
- Unofficial event, Mariehamn, Finland, 1980; I don’t have a report.
- 22nd IMO, Washington D.C., U.S.A., 1981; I don’t have a report.
- 23rd IMO, Budapest, Hungary, 5–14 July 1982, report by Robert Lyness (scanned PDF).
- 24th IMO, Paris, France, 1983; I don’t have a report.
- 25th IMO, Prague, Czechoslovakia, 29 June–11 July 1984, report by David Monk (scanned PDF).
- 26th IMO, Joutsa, Finland, 1–11 July 1985, report by Robert Lyness and solutions (scanned PDF).
- 27th IMO, Warsaw, Poland, 4–15 July 1986, report by David Monk (scanned PDF).
- 28th IMO, Havana, Cuba, 5–16 July 1987, report by Robert Lyness (scanned PDF).
- 29th IMO, Canberra, Australia, 9–21 July 1988, report by David Monk (scanned PDF).
- 30th IMO, Braunschweig, Federal Republic of Germany, 13–24 July 1989, report by David Monk (scanned PDF).
- 31st IMO, Beijing, China, 9–19 July 1990, report by Peter Shiu (scanned PDF).
- 32nd IMO, Sigtuna, Sweden, 12–23 July 1991, report by Tony Gardiner (scanned PDF).
- 33rd IMO, Moscow, Russia, 10–21 July 1992, report by Tony Gardiner (scanned PDF).
- The TeX source of the 1993 report requires additional macro files ccplain.tex and ccdef.tex.
- 34th IMO, Instanbul, Turkey, 13–24 July 1993, report by Adam McBride (TeX source) (PDF).
- 35th IMO, Hong Kong, 8–20 July 1994, report by Tony Gardiner (scanned PDF).
- 36th IMO, York (Toronto), Canada, 13–25 July 1995, report by Tony Gardiner (scanned PDF).
- The TeX sources of the 1996 and 1997 reports require additional macro files ccplain.tex and ccdef.tex.
- 37th IMO, Bombay, India, 5–17 July 1996, report by Adam McBride (TeX source) (PDF).
- 38th IMO, Mar del Plata, Argentina, 18–31 July 1997, report by Adam McBride (TeX source) (PDF).
- 39th IMO, Taipei, Taiwan, 10–21 July 1998, report by Adam McBride (MS Word source) (PDF).
- 40th IMO, Bucharest, Romania, 10–22 July 1999, report by Imre Leader (TeX source) (PDF).
- 41st IMO, Taejon, South Korea, 13–25 July 2000, report by Imre Leader (TeX source) (PDF).
- 42nd IMO, Washington D.C., U.S.A., 1–14 July 2001, report by Imre Leader (TeX source) (PDF).
- 43rd IMO, Glasgow, United Kingdom, 19–30 July 2002, report by Geoff Smith (MS Word source) (PDF).
- 44th IMO, Tokyo, Japan, 7–19 July 2003, report by Geoff Smith (LaTeX source) (PDF).
- 45th IMO, Athens, Greece, 6–18 July 2004, report by Geoff Smith (LaTeX source) (PDF).
- 46th IMO, Mérida, Mexico, 8–19 July 2005, report by Geoff Smith (LaTeX source) (PDF).
- 47th IMO, Ljubljana, Slovenia, 6–18 July 2006, report by Geoff Smith (LaTeX source) (PDF).
- A documentary about the UK preparation for and participation in IMO 2006, Beautiful Young Minds, was broadcast on BBC2 at 9pm on Sunday 14 October 2007; see further information on Plus.
- 48th IMO, Hanoi, Vietnam, 19–31 July 2007, report by Geoff Smith (LaTeX source) (PDF).
- 48th IMO, Hanoi, Vietnam, 19–31 July 2007, unofficial report by Dominic Yeo.
- 49th IMO, Madrid, Spain, 10–22 July 2008, report by Geoff Smith (LaTeX source) (PDF).
- 50th IMO, Bremen, Germany, 10–22 July 2009, report by Geoff Smith (LaTeX source) (PDF).
- 51st IMO, Astana, Kazakhstan, 2–14 July 2010, report by Geoff Smith (LaTeX source) (PDF).
- 51st IMO, Astana, Kazakhstan, 2–14 July 2010, unofficial report by Aled Walker (LaTeX source) (PDF).
- 52nd IMO, Amsterdam, Netherlands, 13–24 July 2011, report by James Cranch (LaTeX source) (PDF).
- 52nd IMO, Amsterdam, Netherlands, 13–24 July 2011, observations by Geoff Smith (LaTeX source) (PDF).
- 52nd IMO, Amsterdam, Netherlands, 13–24 July 2011, unofficial report by Adam Goucher.
- 53rd IMO, Mar del Plata, Argentina, 4–16 July 2012, report by James Cranch (LaTeX source) (PDF).
- 53rd IMO, Mar del Plata, Argentina, 4–16 July 2012, observations by Geoff Smith (LaTeX source) (PDF).
- 53rd IMO, Mar del Plata, Argentina, 4–16 July 2012, unofficial report by Daniel Hu.
- 53rd IMO, Mar del Plata, Argentina, 4–16 July 2012, unofficial report by Andrew Carlotti (LaTeX source) (PDF).
- 54th IMO, Santa Marta, Colombia, 18–28 July 2013, report by Geoff Smith (LaTeX source) (PDF).
- 54th IMO, Santa Marta, Colombia, 18–28 July 2013, Deputy Leader’s report by Dominic Yeo (LaTeX source).
- 54th IMO, Santa Marta, Colombia, 18–28 July 2013, unofficial report by Warren Li (LaTeX source).
- 54th IMO, Santa Marta, Colombia, 18–28 July 2013, unofficial report by Andrew Carlotti (LaTeX source).
- 55th IMO, Cape Town, South Africa, 3–13 July 2014, report by Geoff Smith (LaTeX source) (PDF).
- 55th IMO, Cape Town, South Africa, 3–13 July 2014, Deputy Leader’s report by Dominic Yeo.
- 55th IMO, Cape Town, South Africa, 3–13 July 2014, unofficial report by Gabriel Gendler.
- 56th IMO, Chiang Mai, Thailand, 4–16 July 2015, report by Geoff Smith (LaTeX source) (PDF).
- 56th IMO, Chiang Mai, Thailand, 4–16 July 2015, Deputy Leader’s report by Dominic Yeo.

The UK has competed in the Balkan Mathematical Olympiad from 2005 onwards, with the 2008 team being a joint UK and Ireland team; reports, except for 2006, are available here.

- 22nd Balkan MO, Iași, Romania, 4–10 May 2005, report by Robin Bhattacharyya (MS Word source) (PDF).
- 23rd Balkan MO, Agros, Cyprus, 27 April–3 May 2006; I don’t have a report.
- 24th Balkan MO, Rhodes, Greece, 26 April–2 May 2007, report by Robin Bhattacharyya (MS Word source) (PDF).
- 24th Balkan MO, Rhodes, Greece, 26 April–2 May 2007, unofficial report by Tom Lovering and Dominic Yeo.
- 25th Balkan MO, Ohrid, Macedonia, 4–10 May 2008, report by Adrian Sanders (MS Word source) (PDF).
- 26th Balkan MO, Kragujevac, Serbia, 28 April–4 May 2009, report by Vesna Kadelburg (MS Word source) (PDF).
- 27th Balkan MO, Chişinău, Moldova, 2–8 May 2010, report by Geoff Smith (LaTeX source) (PDF).
- 28th Balkan MO, Iași, Romania, 4–8 May 2011, report by Geoff Smith (LaTeX source) (PDF).
- 29th Balkan MO, Antalya, Turkey, 26 April–2 May 2012, report by Geoff Smith (LaTeX source) (PDF).
- 29th Balkan MO, Antalya, Turkey, 26 April–2 May 2012, unofficial report by Gabriel Gendler.
- 30th Balkan MO, Agros, Cyprus, 28 June–3 July 2013, report by Geoff Smith (LaTeX source) (PDF).
- 30th Balkan MO, Agros, Cyprus, 28 June–3 July 2013, unofficial report by the UK team.
- 31st Balkan MO, Pleven, Bulgaria, 2–7 May 2014, unofficial report by the UK team.

The UK has competed in the Romanian Master of Mathematics (originally Master in Mathematics) from 2008 onwards; reports are available here.

- 1st RMM, Bucharest, Romania, 7–11 February 2008, report by Geoff Smith (LaTeX source) (PDF).
- 2nd RMM, Bucharest, Romania, 26 February–2 March 2009, report by Adrian Sanders (LaTeX source) (PDF).
- 3rd RMM, Bucharest, Romania, 24 February–1 March 2010, report by Robin Bhattacharyya (MS Word source) (PDF).
- 4th RMM, Bucharest, Romania, 23–28 February 2011, report by James Cranch (LaTeX source) (PDF).
- 4th RMM, Bucharest, Romania, 23–28 February 2011, unofficial report by Richard Freeland (MS Word source) (PDF).
- 5th RMM, Bucharest, Romania, 29 February–4 March 2012, report by James Cranch (LaTeX source) (PDF).
- 5th RMM, Bucharest, Romania, 29 February–4 March 2012, unofficial report by James Aaronson.
- 6th RMM, Bucharest, Romania, 27 February–3 March 2013, report by Jonathan Lee (LaTeX source) (PDF).
- 6th RMM, Bucharest, Romania, 27 February–3 March 2013, unofficial report by Matei Mandache.
- 7th RMM, Bucharest, Romania, 25 February–1 March 2015, report by Dominic Yeo (LaTeX source) (PDF).

The UK competed in the China Girls’ Mathematical Olympiad (the precise English name of this competition varies from source to source) in 2010. A report is available here.

The UK has competed in the European Girls’ Mathematical Olympiad from 2012 onwards; reports are available here.

- 1st EGMO, Cambridge, United Kingdom, 10–16 April 2012, report by Alison Zhu.
- 1st EGMO, Cambridge, United Kingdom, 10–16 April 2012, unofficial report by Natalie Behague (LaTeX source) (PDF). The LaTeX souce of this report requires files team.jpg and sparkles.jpg.
- 2nd EGMO, Luxembourg City, Luxembourg, 8–14 April 2013, report by Hannah Roberts (LaTeX source) (PDF).
- 2nd EGMO, Luxembourg City, Luxembourg, 8–14 April 2013, unofficial report by the Egmoids of UNK.
- 3rd EGMO, Antalya, Turkey, 10–16 April 2014, report by Hannah Roberts (LaTeX source) (PDF).
- 3rd EGMO, Antalya, Turkey, 10–16 April 2014, unofficial report by the Egmoids of UNK (LaTeX source, photos 1, 2, 3, 4, 5, 6, 7, 8, 9, 10).

All the reports from 1996 onwards were provided by their respective authors or typesetters in electronic form; I did the HTML conversions here. Older reports were scanned in; Tony Gardiner provided the reports from 1991 to 1995, David Monk those from 1980 (Mersch), 1982, 1984, 1986 and 1990 and the DfES those from 1985, 1987, 1988 and 1989. The TeX source of the 1993 report here is derived from the printed report and from the TeX source of an abridged version provided by Adam McBride. Reports from The Mathematical Gazette appear by permission of the Mathematical Association. Reports from Mathematical Spectrum appear by permission of the Applied Probability Trust. Angus Rodgers pointed me to the reports in Science Teacher, and Amites Sarkar pointed me to the reports in Mathematical Spectrum.

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Contact: Joseph Myers (imo-register@imo-register.org.uk)

Last updated: 2 August 2015