The Full Breakdown: DEI vs EDI
| Term | Stands for | Primary use | Legal anchor |
|---|---|---|---|
| DEI | Diversity, Equity, Inclusion | US, global corporates | Less specific, equity is a principle not a legal concept |
| EDI | Equality, Diversity, Inclusion | UK, public sector | Equality Act 2010 |
| DEIB | Diversity, Equity, Inclusion, Belonging | Growing use globally | Belonging adds the felt-sense dimension |
| JEDI | Justice, Equity, Diversity, Inclusion | Social justice contexts, academia | Justice emphasises systemic/structural dimension |
Equity vs Equality: The Core Distinction
The most substantive difference between DEI and EDI is the choice between equity and equality as the third word after Diversity.
Equality means treating everyone the same. Under the Equality Act 2010, equality means ensuring that people are not treated less favourably because of a protected characteristic. The legal standard is consistent treatment. The Equality Act prohibits discrimination (treating someone less favourably because of who they are) and harassment (unwanted conduct related to a protected characteristic).
Equity means providing different levels of support to achieve equal outcomes. The equity framing recognises that people start from different positions and face different barriers. Treating everyone exactly the same can perpetuate existing inequalities if those inequalities arise from structural differences in starting position.
A frequently used illustration: equality means giving everyone a 30-centimetre box to stand on. Equity means giving each person the box size they need to see over a fence at the same height. The outcome (seeing over the fence) is the same; the means differ.
In workplace contexts, equity shows up in decisions like: providing adjustments for disabled employees that non-disabled employees do not require; implementing targeted outreach to under-represented groups in recruitment; providing additional developmental support to employees from groups that have historically had less access to development; and designing mentoring programmes that prioritise under-represented groups.
Neither equality nor equity is the exclusive right approach. UK employment law is built on equality (consistent treatment) as the legal standard. Many effective DEI practices are equity-based (differential support to overcome differential barriers). Most mature EDI/DEI programmes use both.
Why UK Organisations Tend to Use EDI
The UK Equality Act 2010 is the foundational legal framework for workplace EDI in Great Britain. The Act prohibits discrimination and harassment related to nine protected characteristics: age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, and sexual orientation.
Public-sector organisations in Great Britain are also subject to the Public Sector Equality Duty (section 149 of the Equality Act), which requires them to have due regard to the need to advance equality, foster good relations, and eliminate discrimination. The duty creates proactive obligations rather than only reactive prohibitions.
Because UK law uses "equality" rather than "equity" as the framing concept, UK organisations, particularly in the public sector and in regulated industries, have tended to use EDI rather than DEI. The NHS uses EDI. Civil Service departments use EDI. CIPD guidance typically uses EDI.
Why Global Organisations Tend to Use DEI
The US corporate DEI movement emerged from an intellectual tradition that emphasises structural barriers to equity rather than individual-level equality of treatment. The equity framing acknowledges that diversity of outcome requires differential input, not just identical process.
As US corporations globalised, DEI became the dominant multinational corporate terminology. FTSE 100 companies with US operations or parent companies often use DEI in their corporate frameworks. Consultancy firms with US origins (McKinsey's DEI practice, Deloitte's DEI frameworks) have adopted DEI terminology globally.
The Third Element: Inclusion
Diversity and equality (or equity) are both necessary but not sufficient for inclusive organisations. Inclusion is the third dimension that describes whether the diverse individuals in an organisation can actually contribute fully.
Diversity measures representation (how many people from different backgrounds are in the organisation). Equality and equity address the conditions for fair treatment and differential support. Inclusion addresses whether diverse people can actually participate, contribute their perspectives, and feel that their contributions are valued.
An organisation can have diverse representation without inclusion, through structural barriers that prevent diverse individuals from contributing effectively. The most common manifestation: organisations that hire diversely but whose leadership, promotion processes, and cultural norms default to a narrow set of behaviours that only some employees perform naturally. Diversity without inclusion is tokenism.
Inclusive leadership (see our guide to inclusive leadership) is the primary mechanism through which inclusion is created in teams. The specific leadership behaviours that produce psychological safety, invite diverse perspectives, and equitably recognise diverse contributions are the operational content of the inclusion dimension.
DEIB: Adding Belonging
Some organisations have added Belonging as a fourth dimension. Research by Coqual (formerly Center for Talent Innovation) has demonstrated that belonging, the felt sense that you fit in and are valued, is distinct from inclusion as a structural condition. An employee can be included in organisational processes while not experiencing a sense of belonging in the team.
Belonging is particularly important for intersectional identities, for employees who are one of very few representatives of their demographic group in a team, and for organisations with hybrid or distributed working patterns where informal relationship-building is harder.
What the Terminology Choice Means for Training
The terminology choice does not determine training effectiveness. The question that determines training effectiveness is: what specific observable behaviours are you trying to change?
DEI, EDI, DEIB and JEDI programmes all fail when they deliver awareness content rather than rehearsing specific behavioural moments. They all succeed when they address the specific moments where inclusive or non-inclusive behaviour shows up in the leader's or team member's actual working life.
Sidestream's design is agnostic to the acronym. Our DEI and EDI training focuses on the specific behavioural targets the organisation wants to move: the bystander-intervention moment, the disclosure-response behaviour, the inclusive leadership moments, the specific biases that affect recruitment and performance decisions. Whether the organisation calls it DEI or EDI is a secondary consideration.
Related Sidestream Guides
- DEI Training London, bespoke immersive EDI/DEI behaviour change
- What is Inclusive Leadership?
- Harassment Prevention Training London
- Speak-Up Culture Training London
- Psychological Safety Training London
- Glossary: 100 Behaviour Change Terms
Frequently Asked Questions
What is the difference between DEI and EDI?
DEI = Diversity, Equity, Inclusion (US/global). EDI = Equality, Diversity, Inclusion (UK/public sector). The core difference is equity vs equality: equity means differential support for equal outcomes; equality means consistent treatment.
Which is correct: DEI or EDI?
Both are in common use. EDI is more common in UK organisations due to the Equality Act 2010. DEI is more common in US organisations and global corporates. Neither is incorrect.
What is the difference between equality and equity?
Equality: giving everyone the same treatment. Equity: giving everyone what they need to reach the same outcome, which may differ. Both have roles in effective inclusion work.
Does the terminology matter for DEI/EDI training?
Less than the substance. The question that determines training effectiveness is which specific observable behaviours are being targeted and rehearsed, not which acronym is used.
The Protected Characteristics Under UK Equality Law
Whatever acronym an organisation uses, UK equality law is built around nine protected characteristics under the Equality Act 2010:
- Age
- Disability
- Gender reassignment
- Marriage and civil partnership (limited protection, not covered by Section 26 harassment)
- Pregnancy and maternity
- Race (includes colour, nationality, ethnic or national origin)
- Religion or belief
- Sex
- Sexual orientation
The Equality Act prohibits direct discrimination (treating someone less favourably because of a protected characteristic), indirect discrimination (applying a provision, criterion or practice that puts people with a protected characteristic at a disadvantage), harassment, and victimisation (treating someone badly because they have made or supported an equality claim).
DEI/EDI programmes that are not grounded in this legal framework risk addressing cultural preferences while missing the legal obligations that carry direct employment-law risk.
The Three Most Common UK DEI/EDI Frameworks in Practice
The Equality Act 2010 compliance framework. Organisations use this as the baseline: what is legally required, what the protected characteristics are, what discrimination, harassment and victimisation mean, what the employer duties are. This is the minimum standard.
The Public Sector Equality Duty framework. Public-sector organisations add the proactive PSED requirements: advancing equality, fostering good relations, and eliminating discrimination. This goes beyond the compliance baseline to require active promotion of equality outcomes.
Voluntary charter-mark frameworks. Athena Swan, Race Equality Charter, Stonewall Workplace Equality Index, Disability Confident, and adjacent schemes create additional commitments beyond legal requirements. These are increasingly expected in higher education, NHS, and corporate ESG contexts.
What EDI/DEI Behaviour Change Actually Requires
Effective EDI/DEI programmes address four distinct things, regardless of which acronym they use:
Awareness: Understanding what discrimination, harassment and bias look like, what the protected characteristics are, what the employer's policies are. This can be delivered through e-learning at scale.
Attitude: Genuine commitment to inclusive behaviour, not compliance-only motivation. This is influenced through lived-experience exposure, peer discussion, and leadership modelling.
Behaviour: The specific observable moments where inclusive or non-inclusive behaviour shows up. The bystander moment, the recruitment decision, the performance review, the meeting where diverse voices are heard or suppressed. This requires structured behavioural rehearsal.
Structural conditions: The organisational systems, processes and norms that produce or suppress inclusive behaviour. This requires organisational-development work alongside individual training.
The most common failure mode in UK EDI/DEI programmes is addressing awareness (first point) without reaching behaviour (third) or structural conditions (fourth). Effective programmes address all four. Whether they are called DEI or EDI is a secondary consideration.