Performance

Targets

UN SDG	Topic	CSRD	KPI	FYE 24 Progress
Our Environment
	Scope 1&2 Emissions	Energy Management	70% reduction to 948 tCO2e by 2032	2,009 tCO2e* A 36% reduction from baseline
	Total installed solar	Renewable energy	Total installed capacity increase to 11,479 kWp by March 2028	8,545 kWp* 74% progress towards target
	Scope 3 / Embodied carbon	Carbon Management	Emissions data quality improvement KPI being discussed with revolving credit facility lenders
Our People
	Turnover of full-time staff		Maintain turnover below average UKREtails levels¹ of 33%	14.4%
	A staff training KPI		Increase year on year of total hours trained, both male and female	17,542 37% reduction in hours²
Our Communities
	Free space donation to local charities	Access & Affordability	Trajectory in line with targets in revolving credit facility	£869,944* exceeding this year’s target
	Customer donations & matched funds		Raise a minimum of £220k a year	£394,878*
Our Buildings
	Estate EPCs	Sustainable Self Storage Design	Have all stores achieve a B or above by 2028	103* stores (94%) with B or above rating
	Biodiversity		Average Biodiversity Net Gain (“BNG”)³ per new store of over 10%	Slough Farnham Road 284% net gains
Our Suppliers
	Prompt payment		Pay 95% of invoices within 60 days	99.96% paid within 60 days
Our Health, Safety & Information Security
	Staff annual incident rate		AIIR to stay lower than industry⁴ category average of 1,169	0 (no reportable injuries in the year)
	Information security breaches	Cyber & Data Security	Maintain a minimal level of high risk reportable breaches	Achieved - 0 high risk reportable ICO incidents in the year
Our Governance
	ESG related LTIP vesting criteria – solar retrofit	Board Ownership & responsibility	Retrofitting solar panels on 40 stores by 2025	48* stores retrofitted to date
	ESG related LTIP vesting criteria – green loan debt facility	Board Ownership & responsibility	30-50% of the group’s total debt facilities being green loans by 2025	67%* of the Group's total debt facilities at 31 March 2025 are green loans

* Denotes values externally assured by SGS

¹UK Retail levels of 33% - ONS Employee turnover levels and rates by industry section, UK

²Reductions in training hours due to training delivery optimisation – more being delivered online rather than in person

³BNG is a mandatory planning requirement that all developers must deliver a minimum BNG of 10% This means a development will result in more or better-quality natural habitat than there was before development

⁴ Industry – Warehousing and support activities for transportation. SIC 52 – HSE Work-related non-fatal injuries to employees in Great Britain by detailed industry

CSR Benchmarking

With a range of external benchmark options, we have selected three we take part in annually: GRESB, CDP and FTSE4Good.

We act on feedback received and consider them as part of our continuous improvement mechanism. We consider GRESB and FTSE4Good to be particularly relevant to the nature of our business and our continued inclusion forms part of select Big Yellow’s senior managers performance conversations.

We are aware of the limitations we face with taking part in benchmarks designed for traditional Real Estate organisations rather than self storage, but value the opportunity to be transparent and are committed to continued participation.

Global Real Estate Sustainability Benchmark (GRESB)

GRESB is an independent organisation providing validated ESG performance data and peer benchmarks for investors and managers to improve business intelligence, industry engagement and decision-making.

EPRA sBPR Awards

European Public Real Estate Association (EPRA) Sustainability Best Practices Recommendations (sBPR) recognises companies which have issued the best-in-class annual sustainability performance report. Based on adherence to the EPRA sBPR in their public disclosure, companies are identified for Gold, Silver or Bronze Awards.

CDP

The Carbon Disclosure Project (CDP) runs the global environmental disclosure system. Each year CDP supports thousands of organisations to measure and manage their risks and opportunities on climate change, water security and deforestation. We do so at the request of their investors, purchasers and city stakeholders.

FTSE4Good Index

The Index Series is designed to measure the performance of companies demonstrating strong Environmental, Social and Governance (ESG) practices.

FTSE ESG Ratings: FTSE ESG Ratings provide a multi-dimensional measure of environmental, social and governance exposure and practice. It provides the investment community with a tool for portfolio design and management to investigate ESG criteria, or as a framework for corporate engagement and stewardship.

ISS ESG

ESG solutions enable investors to develop and integrate responsible investing policies and practices, engage on responsible investment issues, and monitor portfolio company practices through screening solutions.

MSCI ESG Leaders Index

MSCI ESG Ratings help investors identify ESG risks and opportunities within their portfolio

Sunday Times Best Companies

We periodically take part in Sunday Times Best Companies to work for and report outcomes and insights in the years where we do participate.

Report	2022/23 score	2023/24 score
GRESB	89% 5/5 gold stars	85% 4/5 gold stars
EPRA	Gold	Gold
CDP	A-	Awaiting score
FTSE4Good	3.0	3.1
ISS	C with Prime status	C with Prime status
MSCI	BBB	BBB
Sustainanalytics	9.51 Negligible risk	8.03 Negligible risk

Standards

Big Yellow signs up to a range of standards and best practice schemes.

We commit to BREAAM standards for new construction projects
We have signed up to the Considerate Constructor Scheme (‘CCS’)

Global Reporting Initiative (GRI) Standard

GRI helps businesses and governments worldwide understand and communicate their impact on critical sustainability issues such as climate change, human rights, governance and social well-being. This enables real action to create social, environmental and economic benefits for everyone. The GRI Sustainability Reporting Standards are developed with true multi-stakeholder contributions and rooted in the public interest.

At Big Yellow, we have traditionally reported on a range of environmental key performance indicators and – where relevant - identify them using the codes from the Global Reporting Initiative, as applied by the European Public Real Estate Association (EPRA) at the request of some of our stakeholders.

GRI employee data has been reported for the first time in 2018 and can be found in our annual CSR reports.

EPRA Codes

Our key carbon emission performance indicators use the EPRA codes (as well as GRI) at the request of our investors and other stakeholders for Real Estate Investment Trust (REIT) benchmarking purposes.

EPRA, the European Public Real Estate Association, is the voice of the publicly traded European real estate sector. Founded in 1999, EPRA is a not-for-profit association registered in Belgium. With more than 260 members, covering the whole spectrum of the listed real estate industry (companies, investors and their suppliers), EPRA represents over EUR 450 billion of real estate assets* and 94% of the market capitalisation of the FTSE EPRA Nareit Europe Index.

We publish our EPRA table in our CSR Reports.

Mandatory Greenhouse Gas (GHG) Reporting Regulation

We report energy use and carbon emissions in compliance with the Companies Act and Climate Change Regulation on Reporting Greenhouse Gas (“GHG”) Emissions for listed companies.

We report our self storage portfolio emissions and the absolute emissions that include our non store portfolio.

Our key carbon emission performance indicators use the GRI KPIs and the EPRA codes, at the request of our investors and other stakeholders for Real Estate Investment Trust (REIT) benchmarking purposes.

Assurance of our data: the ISAE 3000 Standard provides an evaluation methodology for both the quantitative and qualitative aspects of our carbon management and our energy use.

For more details on our applications for the above benchmarks please see the Basis of Reporting document.

Our Annual Report & Accounts contains the relevant key emission data as required under the Mandatory Greenhouse Gas reporting regulations.

SECR and Mandatory GHG Reporting

The Companies (Directors’ Report) and Limited Liability Partnerships (Energy and Carbon Report) Regulations 2018 (‘SECR’) came into force on 1 April 2019 and applies to companies with financial years starting on or after 1 April 2019. The 2018 Regulations define what must be included in the Directors’ Report, namely:
Please refer to our Annual Report and Accounts, Directors’ Report section for our SECR report.

EU Energy Efficiency Directive; The UK Energy Savings Opportunities Scheme (ESOS)

We have appointed an accredited ESOS Assessor, who measured all of our energy consumption and determined significant areas of use.

The Assessor will conduct energy audits and deliver surveys and recommendations.

We use these reports to assess future, potential energy saving opportunities as part of our Quarterly CSR Forums – see Governance section for how we work.

Energy Performance Certificate (EPCs)

An Energy Performance Certificate (EPC) rates the energy efficiency and environmental impact of our property. It is rated on a scale from A+ to G (where A+ is the most efficient and G the least efficient) and we believe is a positive way to showcase the energy efficiency of our stores.

We have made a commitment to have all of our estate as a B or above by 2028.
We report on our EPC coverage as part of our targets and performance section – please access our latest ESG Report for further information.

Big Yellow Store Portfolio Asset Certifications

Brand	Store	EPC	BREEAM	Other 'green' features	Solar Capacity (kWh)	Electric Vehicle Charging	CLA sq ft	ONS Grid Reference
BY	Aberdeen	B			49.35		53,620	NJ905095
1	Balham	B	-	-	10 kWh	-	61,384
2	Barking	A	-	Green roof	50 kWh	-	64,052
3	Battersea	A	Excellent	Green roof ASHP New trees planted	50 kWh	2 x 7KWh chargers	68,981
4	Beckenham	B	-	-	-	-	70,767
5	Birmingham	B	-	-	-	-	64,360
6	Bow	C	-	-	-	-	133,918
7	Bracknell	A	Excellent	New trees planted Bird & bat boxes ASHP	50 kWh	2 x 7KWh chargers	43,610
8	Brighton	C	-	-	-	-	58,461
9	Bristol Ashton Gate	B	-	-	50kWh	-	64,104
10	Bristol Central	B	-	-	50kWh	-	64,067
11	Bromley	B	-	-	7 kWh	-	71,884
12	Byfleet	C	-	-	-	-	48,067
13	Camberley	B	-	SUDS	10 kWh	-	67,441
14	Camberwell	A	Excellent	New trees planted Bird & bat boxes ASHP	50 kWh	2 x 7KWh chargers	58,845
15	Cambridge	B	-	-	-	-	61,468
16	Cardiff	C	-	-	-	-	75,139
17	Chelmsford	C	-	-	Planned 2021/22	-	56,040
18	Cheltenham	C	-	-	-	-	50,576
19	Chester	C	-	-	-	-	68,470
20	Chiswick	B	-	Green roof	50 kWh	-	72,882
21	Colchester	C	-	-	-	-	54,241
22	Croydon	C	-	-	-	-	79,341
23	Dagenham	C	-	-	-	-	51,384
24	Ealing	B	-	-	-	-	56,492
25	Edinburgh	B	-	-	26 kWh	-	63,125
26	Edmonton	B	-	-	Planned 2021/22	-	85,404
27	Eltham	B	-	-	-	-	68,676
28	Enfield	B	Excellent	-	50 kWh	-	62,847
29	Finchley East	B	-	-	Planned 2021/22	-	54,259
30	Finchley North	C	-	-	Planned 2021/22	-	62,085
31	Fulham	B	-	Green roof	28 kWh	-	137,547
32	Gloucester	B	-	-	-	-	53,593
33	Guildford Central	A	Very Good	-	50 kWh	-	46,030
34	Guildford Slyfield	C	-	-	-	-	55,589
35	Gypsy Corner	B	-	-	50 kWh	-	70,491
36	Hanger Lane	C	-	-	-	-	66,081
37	High Wycombe	B	-	Green roof Bird boxes Log pile habitat	-	-	60,030
38	Hounslow	C	-	-	-	-	54,669
39	Ilford	C	-	-	Planned 2021/22	-	57,907
40	Kennington	B	-	-	4 kWh	-	66,166
41	Kingston	B	-	-	-	-	62,145
42	Leeds	B	-	-	-	-	81,164
43	Liverpool Edge Lane	B	-	Newly planted trees	-	-	61,285
44	Luton	C	-	-	-	-	41,275
45	Manchester	A	-	-	50 kWh	2 x 7KWh chargers	48,814
46	Merton	B	-	-	9 kWh	-	81,132
47	Milton Keynes	B	-	-	-	-	59,824
48	New Cross	B	-	-	50 kWh	-	61,501
49	New Malden	C	-	-	-	-	81,661
50	Nine Elms	C	-	-	-	-	64,947
51	North Kensington	B	-	-	-	-	50,296
52	Norwich	C	-	-	50 kWh	-	47,033
53	Nottingham	B	-	-	18 kWh	-	66,582
54	Orpington	C	-	-	-	-	64,840
55	Oxford	C	-	-	-	-	33,394
56	Oxford 2	B	-	-	-	7KWh chargers	39,736
57	Poole	B	-	-	-	-	54,844
58	Portsmouth	C	-	-	-	-	61,541
59	Reading	B	Excellent	SUDS	9 kWh	-	62,438
60	Richmond	B	-	-	18 kWh	-	35,066
61	Romford	C	-	-	-	-	70,242
62	Sheen	A	Excellent	Bat and bird boxes	8 kWh	-	66,742
63	Sheffield (BL)	B	-	-	-	-	63,315
64	Sheffield (Hlls.)	B	-	Green roof	-	-	62,660
65	Slough	C	-	-	-	-	67,374
66	Southend	C	-	-	-	-	56,911
67	Staples Corner	C	-	-	-	-	112,154
68	Stockport	B	-	-	-	-	64,510
69	Sutton	B	-	Green roof	-	-	75,569
70	Swindon	B	-	-	-	-	53,186
71	Tolworth	B	-	-	-	-	56,943
72	Tunbridge Wells	B	-	-	50 kWh	-	57,708
73	Twickenham	A	-	SUDS	16 kWh	-	77,478
74	Twickenham 2	C	-	-	-	-	24,161
75	Wandsworth	B	-	-	50 kWh	-	71,477
76	Wapping	D	-	-	-	-	30,851
77	Watford	C	-	-	50 kWh	-	63,854
78	West Norwood	C	-	-	-	-	56,995
	'Green' Stores	78				-
	All Stores	78				-

Notes: Explanation of terms:

EPC = Energy Performance Certification (Legislation)
SUDS = Sustainable Urban Drainage System
ASHP = Air Source Heat Pump

Risks and Opportunities

Our climate related risks management process and approach are closely aligned to our Business Risk process and therefore in parts confidential. The attached document represents a high-level introduction of how we manage climate related risks and opportunities and how these feed into and are part of our Business Risk process. This process forms part of our work to embed the Task Force on Climate Related Financial Reporting (‘TCFD’) recommendations.

Please access our latest Managing Climate Related Risks and Opportunities document for more information.

Emissions Reduction

Big Yellow Science-Based Targets to 2032.

Scope 1, 2 and 3 update 2024-25