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Elliot Treharne - gifts and hospitality

Date gifted Details Donor / Provider Estimated value Reason for acceptance
16 May 2026 Attendance at Breathe Cities Workshop in Mexico City including return flights, accommodation, transport, meals and other workshop-related costs. Organised by C40 and paid for by Breathe Cities, an initiative jointly delivered by Bloomberg Philanthropies, Clean Air Fund and C40 $6,133 (approx. £4,538) Knowledge exchange, peer-to-peer learning and network development with partner cities.
27 January 2026 Dinner International Council for Clean Transportation (ICCT) £70 Dinner with the Chief Executive of the ICCT in my capacity as board advisor to ICCT.

Date gifted Details Donor / Provider Estimated value Reason for acceptance
10 June 2025 10-13 June 2025 - Participation in the ICCT Transatlantic Transport Decarbonisation Summit at the De Vere Latimer Estate, Chesham UK, including three nights’ accommodation, meals etc International Council on Clean Transportation (ICCT) Approx £800 (based on total hotel costs of £300 and £500 for fully inclusive summit speaker ticket). Stakeholder engagement

Date gifted Details Donor / Provider Estimated value Reason for acceptance
04 December 2024 Participation in C40 Breathe Cities workshop (4 – 5 December 2024) including one nights’ accommodation, meals etc C40 Breathe Cities Approx £190 (based on total hotel costs of £140 and £50 for meals/other costs) To attend the C40 Breathe Cities workshop to share experience relevant to my role at the GLA.
20 November 2024 20 November – 22 November 2024 - Participation in ICCT board retreat including return economy flight to San Francisco, two nights’ accommodation, meals etc International Council for Clean Transportation (ICCT) Approx £1,350 (based on £654 flight, hotel costs of £260 a night and £175 for meals/other costs) To attend the ICCT board retreat in my role as board advisor.
25 September 2024 2 x dinners - 24/09/2024 – 25/09/2024 C40 Cities Approx £80 Stakeholder engagement
24 September 2024 Participation in New York Climate Week including speaking on a panel. 24/09/2024 – 27/09/2024 Clean Cities Campaign, Transport & Environment Approx £2,050 for travel and three nights hotel accommodation To meet with stakeholders and share/learn international best practice relevant to my work at the GLA
19 September 2024 Participation in Harvard University Kennedy School of Government Bloomberg Centre for Cities Air Quality Solutions Workshop. 19/09/2024 – 20/09/2024 Harvard University Kennedy School of Government Approx £1,500 for economy flight and two nights hotel accommodation Networking with other cities and sharing/learning from best practice relevant to my work at the GLA
03 September 2024 Dinner with a Californian green transport delegation at the House of Lords hosted by Lord Ian Duncan. Los Angeles Cleantech Incubator using funding from the USC Schwarzenegger Institute Approx £75 Opportunity to network with senior international experts.
15 August 2024 Ticket to Taylor Swift’s Eras Tour Concert including hospitality. LS Events £500 Supporting the GLA Events Team with their stakeholder engagement
19 June 2024 Participation in the Transatlantic Transportation Decarbonisation Summit including flights, transfers, accommodation and summit registration fee. 19/06/2024 – 22/06/2024 International Council for Clean Transportation (ICCT) Flights – approx. £600 Accommodation - £150 a night for three nights Other costs (registration fee, transfers, dinners etc) – approx £500 Total: £1,550 To attend the Transatlantic Decarbonisation Summit. There are six key governments — California, Canada, the European Commission, the UK, and the US — to influence international decision-makers over policy areas which are major mayoral priorities.
18 June 2024 Participation in dinner for Breathe Cities convening   Bloomberg Philanthropies £64 A unique opportunity to meet with cities from around the world participating in the Breathe Cities programme to share best practice. Bloomberg is also a funder of Breathe London, so attending the dinner is important for funder management.

Date gifted Details Donor / Provider Estimated value Reason for acceptance
01 November 2023 Return economy flight to San Francisco and two nights’ accommodation. 1 - 3 November   International Council for Clean Transportation (ICCT) £1,110 To attend their board retreat in my role as board advisor to ICCT.
21 May 2023 Participation in the Transatlantic Transportation Decarbonisation Summit International Council for Clean Transportation (ICCT) £700 To attend the Transatlantic Decarbonisation Summit. This is a unique opportunity to influence international decision-makers with sway over policy areas which are major mayoral priorities.
14 March 2023 Dinner Bloomberg Associates £100 Working dinner with Bloomberg Associates, the consultancy arm of Bloomberg Philanthropies, who are providing pro bono support to various GLA projects.

Date gifted Details Donor / Provider Estimated value Reason for acceptance
29 November 2022 Dinner International Council for Clean Transportation (ICCT) £50 Working dinner with the Chief Executive of the ICCT in my role as board advisor to ICCT.
12 October 2022 Return economy flight to San Francisco and three nights' accomodation (12 October 2022 to 14 October 2022) International Council for Clean Transportation (ICCT) £1400 (based on £800 flight and hotel costs of £200 a night) To attend their board retreat in my role as board advisor to ICCT
24 August 2022 Return economy flight to Washington D.C. and four nights’ accommodation (remaining nights’ accommodation covered at my own cost). International Council for Clean Transportation (ICCT) £1,200 (based on £800 flight and hotel costs of £100 a night, 28 August - 4 September 2022) To speak at a major summit being organised by the ICCT, which has implications for policy areas which are priorities for the Mayor and London.