Quick Answer
Start by defining your non-negotiable exclusions, then narrow funds by SDR label, holdings, cost, diversification and track record. Read the prospectus, KIID and screening policy, and check the latest top holdings rather than relying on the fund name. For larger or pension portfolios, an FCA-regulated adviser can help avoid greenwashing and labelling traps. Past performance is not a reliable indicator of future results.
The UK now has hundreds of funds described as "ethical", "sustainable", "ESG" or "responsible". The challenge isn't finding one — it's finding one that genuinely matches what you mean by ethical, at a sensible cost, inside a properly diversified portfolio.
The framework below is the one I use with clients. It works whether you're picking a single ISA fund or building a diversified pension.
What to Weight When Choosing
Not every selection criterion deserves equal weight. The chart below shows roughly how I weight the key factors when shortlisting an ethical fund. These are guidelines, not rules — your priorities may shift the picture.
Indicative Weighting of Selection Criteria
Indicative weights only. Adjust to reflect your own priorities and the role of the fund in your overall portfolio.
Use the SDR Labels as Your Filter
From 2024, the FCA's Sustainability Disclosure Requirements (SDR) introduced four sustainability labels for UK-authorised funds. They are the most reliable shortcut to understanding what a fund actually does — far more useful than the fund's name.
| SDR Label | What it means | Best suited to |
|---|---|---|
| Sustainability Focus | ≥70% in assets meeting credible sustainability standard | Investors who want a clearly screened sustainable portfolio |
| Sustainability Improvers | Assets that have potential to improve sustainability over time | Investors comfortable funding companies on a transition path |
| Sustainability Impact | Pre-defined positive, measurable environmental or social outcome | Investors prioritising direct, measurable real-world impact |
| Sustainability Mixed Goals | Mix of two or more of the above categories | Investors wanting a blended sustainable strategy |
| No SDR label | Fund does not meet (or hasn't applied for) any of the four SDR labels | Treat with extra caution — read the screening policy carefully |
For more detail, see our guide to the SDR fund labels in the UK.
A 7-Step Selection Process
- 1
Define your non-negotiables
List the two or three sectors you would not knowingly own (e.g. fossil fuel extraction, weapons, tobacco). This sets your exclusion floor.
- 2
Filter by SDR label
Use 'Focus' or 'Impact' for stricter screening, 'Improvers' or 'Mixed Goals' for transition strategies. Treat unlabelled 'sustainable' funds with extra care.
- 3
Read the screening policy
Look at exclusion definitions, revenue thresholds and any 'best-in-class' allowances. This is where two similarly-named funds usually diverge.
- 4
Scan the latest top 20–30 holdings
Confirm the policy is reflected in practice. If anything looks out of step, ask the provider before investing.
- 5
Check cost (OCF)
Aim for under 0.40% for passive ESG and under 0.95% for active ethical funds. Cheaper isn't always better, but unjustified high fees erode returns.
- 6
Assess diversification and track record
Look for a fund that fits the role in your portfolio (core, regional, thematic) with at least a 5-year track record under the same mandate where possible.
- 7
Review stewardship and voting record
A good ethical fund manager publishes how they vote and engage. This is often where real-world influence happens.
Greenwashing Red Flags
Marketing language ('green', 'sustainable', 'responsible') without a clear screening policy underneath
Top holdings that include companies you'd expect the fund to exclude
Vague or absent revenue thresholds in the exclusions document
No SDR label and no clear explanation of why
No published voting or stewardship record
Performance comparisons only against ESG peers, never a conventional benchmark
Active or Passive?
Both can play a role and the right answer often depends on cost, conviction and what you want the fund to do.
- Passive ESG trackers are cheaper (typically 0.15%–0.30% OCF), well-diversified, and apply lighter, rules-based screens. Good for a low-cost core holding.
- Active ethical funds usually apply stricter exclusions and engage more directly with companies, but cost more (typically 0.65%–0.95% OCF). Good where strictness or thematic exposure matters.
- Blended approach — a passive ESG core plus a smaller active or impact sleeve is a common compromise for clients who want both cost efficiency and stronger conviction.
Where Advice Helps
In practice, choosing one ethical fund in isolation is straightforward. Building a properly diversified, values-aligned portfolio across an ISA, SIPP and any legacy pensions — without overlapping holdings or quietly funding sectors you've already excluded — is harder. That's where an FCA-regulated adviser tends to add the most value.
This article is general information, not personalised financial advice. Investment decisions should reflect your own circumstances, capacity for loss, and long-term goals.
FAQs
How do I choose an ethical fund in the UK?
Define your non-negotiable exclusions, filter by SDR label, read the screening policy, scan top holdings, and check cost, diversification, track record and stewardship.
What is the most important factor?
Alignment between the fund's actual screening policy and your personal exclusions. Two similarly-named funds can hold very different companies.
Should I pick an active or passive ethical fund?
Both work. Passive ESG trackers are cheaper and broader; active ethical funds screen more strictly and engage with companies. Many investors blend the two.
How many ethical funds should I hold?
For most retail portfolios, two to five funds across global equities, regional equities, sustainable bonds and possibly an impact sleeve is enough.
How can I avoid greenwashing?
Don't rely on the name. Check the SDR label, read exclusions and thresholds, scan top holdings, and review the manager's voting and engagement record.