| 18 Nov 2025 | 
                                        Informa Capital Markets Day - Visit to Dubai Air Show  | 
                                        
                                                 
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                                        | 17 Nov 2025 | 
                                        Informa Capital Markets Day - Presentations | 
                                        
                                                 
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                                        | 11 Nov 2025 | 
                                        2025 Ten-Month Trading Update | 
                                        
                                                 
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                                        | 23 Jul 2025 | 
                                        2025 Half Year Results | 
                                        
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                                        | 19 Jun  2025 | 
                                         2025 AGM Presentation | 
                                        
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                                        | 17 Jun  2025 | 
                                        2025 AGM Trading Update | 
                                        
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                                        | 1 May 2025 | 
                                        2025 Q1 Trading Update | 
                                        
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                                        | 6 Mar 2025 | 
                                        2024 Full Year Results | 
                                        
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                                        | 19 Nov 2024 | 
                                        2024 Ten-Month Trading Update | 
                                        
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                                        | 24 Jul 2024 | 
                                        2024 Half Year Results | 
                                        
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                                        | 21 Jun 2024 | 
                                        2024 Annual General Meeting | 
                                        
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                                        | 8 Mar 2024 | 
                                        2023 Full Year Results | 
                                        
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                                        | 14 Nov 2023 | 
                                        2023 Ten-Month Trading Update | 
                                        
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                                        | 27 Jul 2023 | 
                                        2023 Half Year Results | 
                                        
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                                        | 15 Jun 2023 | 
                                        2023 AGM Trading Update | 
                                        
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                                        | 9 Mar 2023 | 
                                        2022 Full Year Results | 
                                        
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                                        | 14 Nov 2022 | 
                                        2022 Ten-Month Trading Update | 
                                        
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                                        | 4 Aug 2022 | 
                                        2022 Half-Year Results | 
                                        
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                                        | 16 Jun 2022 | 
                                        2022 AGM Trading Update | 
                                        
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                                        | 15 Mar 2022 | 
                                        2021 Full Year Results | 
                                        
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                                        | 7 Dec 2021 | 
                                        2021 Capital Markets Day | 
                                        
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                                        | 17 Nov 2021 | 
                                        2021 Ten-Month Trading Update | 
                                        
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                                        | 29 Jul 2021 | 
                                        2021 Half-Year Results | 
                                        
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                                        | 3 Jun 2021 | 
                                        2021 Annual General Meeting | 
                                        
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                                        | 22 April 2021 | 
                                        2020 Full Year Results | 
                                        
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                                        | 6 Jan 2021 | 
                                        2020 Year-End Update | 
                                        
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                                        | 21 Sep 2020 | 
                                        2020 Half Year Results | 
                                        
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                                        | 11 Nov 2019 | 
                                        2019 Ten-Month Trading Update | 
                                        
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                                        | 13 Sep 2019 | 
                                        2019 Interim Dividend Payment Date | 
                                        
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                                        | 24 Jul 2019 | 
                                        2019 Half Year Results | 
                                        
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                                        | 31 May 2019 | 
                                        2018 Final Dividend Payment Date | 
                                        
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                                        | 12 Jun 2020  | 
                                        2020 Annual General Meeting | 
                                        
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                                        | 12 Jun 2020  | 
                                        June 2020 Trading Update | 
                                        
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                                        | 04 May 2020 | 
                                        General Meeting - Allotment Authority | 
                                        
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                                        | 10 Mar 2020 | 
                                        Full Year 2019 Results | 
                                        
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                                        | 24 May 2019 | 
                                        2019 Annual General Meeting | 
                                        
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                                        | 10 May 2019 | 
                                        Investor Day 2019 | 
                                        
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                                        | 07 Mar 2019 | 
                                        Full Year 2018 Results | 
                                        
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                                        | 09 Nov 2018 | 
                                        2018 Ten Month Trading Update | 
                                        
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                                        | 14 Sep 2018 | 
                                        2018 Interim Dividend Payment Date | 
                                        
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                                        | 25 Jul 2018 | 
                                        Half Year 2018 Results | 
                                        
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                                        | 1 Jun 2018 | 
                                        2017 Final Dividend Payment Date | 
                                        
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                                        | 25 May 2018 | 
                                        2018 Annual General Meeting | 
                                        
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                                        | 28 Feb 2018 | 
                                        Full Year 2017 Results | 
                                        
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                                        | 30 Jan 2018 | 
                                        2017 Trading Update | 
                                        
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                                        | 09 Nov 2017 | 
                                        Ten Month 2017 Trading Update | 
                                        
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                                        | 15 Sep 2017 | 
                                        2017 Interim Dividend Payment Date | 
                                        
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                                        | 25 Jul 2017 | 
                                        Half Year 2017 Results | 
                                        
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                                        | 15 Jun 2017 | 
                                        Informa Investor Day | 
                                        
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                                        | 02 Jun 2017 | 
                                        2016 Final Dividend Payment Date  | 
                                        
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                                        | 26 May 2017 | 
                                        2017 Annual General Meeting | 
                                        
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                                        | 06 Mar 2017 | 
                                        Full Year 2016 Results | 
                                        
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                                        | 7 Nov 2016 | 
                                        Nine Month 2016 Trading Update | 
                                        
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                                        | 26 Oct 2016 | 
                                        Results of Rights Issue announced | 
                                        
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                                        | 11 Oct 2016 | 
                                        Admission of Rights Issue Shares and dealings in Nil Paid Rights on the London Stock Exchange | 
                                        
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                                        | 10 Oct 2016 | 
                                        General Meeting for Shareholders | 
                                        
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                                        | 09 Sep 2016 | 
                                        2016 Interim Dividend Payment Date | 
                                        
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                                        | 28 Jul 2016 | 
                                        Half Year 2016 Results | 
                                        
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                                        | 26 May 2016 | 
                                        2015 Final Dividend Payment Date | 
                                        
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                                        | 19 May 2016 | 
                                        2016 AGM Trading Update | 
                                        
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                                        | 19 May 2016 | 
                                        2016 Annual General Meeting | 
                                        
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                                        | 11 Feb 2016 | 
                                        Full Year 2015 Results | 
                                        
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                                        | 18 Nov 2015 | 
                                        Investor Day 2015 | 
                                        
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                                        | 20 Oct 2015 | 
                                        Nine-Months 2015 Trading Update | 
                                        
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                                        | 11 Sep 2015 | 
                                        2015 Interim Dividend Payment Date | 
                                        
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                                        | 28 Jul 2015 | 
                                        Half Year 2015 Results | 
                                        
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                                        | 28 May 2015 | 
                                        2014 Final Dividend Payment Date | 
                                        
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                                        | 22 May 2015 | 
                                        2015 Annual General Meeting | 
                                        
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                                        | 21 Apr 2015 | 
                                          First Quarter 2015 Trading Update | 
                                        
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                                        | 12 Feb 2015 | 
                                        Full Year 2014 Results | 
                                        
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                                        | 06 Nov 2014 | 
                                        2014 Investor Day Presentation | 
                                        
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                                        | 21 Oct 2014 | 
                                        Nine Month 2014 Interim Management Statement | 
                                        
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                                        | 29 Jul 2014 | 
                                        Half Year 2014 Results | 
                                        
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                                        | 27 May 2014 | 
                                        Second Interim Dividend | 
                                        
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                                        | 23 May 2014 | 
                                        2014 Annual General Meeting | 
                                        
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                                        | 15 May 2014 | 
                                        First Quarter 2014 Interim Management Statement | 
                                        
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                                        | 21 Feb 2014 | 
                                        Full Year 2013 Results | 
                                        
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                                        | 21 Oct 2013 | 
                                        Nine Month 2013 Interim Management Statement | 
                                        
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                                        | 30 Jul 2013 | 
                                        Half Year 2013 Results | 
                                        
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                                        | 22 Apr 2013 | 
                                        First Quarter 2013 Interim Management Statement | 
                                        
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                                        | 21 Feb 2013 | 
                                        Full Year 2012 Results | 
                                        
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                                        | 16 Oct 2012 | 
                                        Nine Month 2012 Interim Management Statement | 
                                        
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                                        | 25 Jul 2012 | 
                                        Half Year 2012 Results | 
                                        
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                                        | 21 May 2012 | 
                                        First Quarter 2012 Interim Management Statement | 
                                        
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                                        | 21 May 2012 | 
                                        Investor Teach In | 
                                        
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                                        | 23 Feb 2012 | 
                                        Full Year 2011 Results | 
                                        
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                                        | 26 Oct 2011 | 
                                        Nine Month 2011 Interim Management Statement | 
                                        
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                                        | 26 Jul 2011 | 
                                        Half Year 2011 Results | 
                                        
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                                        | 12 May 2011 | 
                                        First Quarter 2011 Interim Management Statement | 
                                        
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                                        | 22 Feb 2011 | 
                                        Full Year 2010 Results | 
                                        
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                                        | 17 Nov 2010 | 
                                        Nine Month 2010 Interim Management Statement | 
                                        
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                                        | 27 Jul 2010 | 
                                        Half Year 2010 Results | 
                                        
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                                        | 28 Apr 2010 | 
                                        First Quarter 2010 Interim Management Statement | 
                                        
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                                        | 02 Mar 2010 | 
                                        Full Year 2009 Results | 
                                        
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