Best ETFs for UK investors
For most people the answer is one fund, not five. Here's what a global tracker already gives you, the four things that decide which version to buy, and why adding a second fund usually buys the same twenty companies twice.
The short answer
For most people it's one fund, not a list. A single global all-world tracker holds thousands of companies across developed and emerging markets for around 0.2% a year, and adding funds on top of it usually buys more of what you already own rather than diversification. The interesting question isn't which five ETFs to buy — it's which one, and why.
The core: one fund that does the whole job
Global all-world — VWRP (accumulating) or VWRL (income)
Thousands of companies across 23 developed and 24 emerging markets. Same portfolio in both; VWRP reinvests dividends inside the fund, VWRL pays them out. This is the closest thing to a complete equity portfolio in a single purchase, and for a lot of people it's the entire answer.
S&P 500 — VUSA (income), VUAG (accumulating) or CSPX
The 500 largest US companies at around 0.07%. Cheaper and historically higher-returning than a global fund over the last decade — but that's a bet on the US continuing to lead, which is a view rather than a default.
Nasdaq-100 — EQQQ
Large US companies excluding financials, so heavily technology. Higher highs, deeper falls, and substantial overlap with anything else you hold.
The four things that actually decide which one
1. Accumulating or income
Same portfolio, different treatment of dividends. Accumulating reinvests them inside the fund automatically, which suits long-term building and removes the job of reinvesting yourself. Income pays them out, which suits someone drawing on the money. Over decades the difference compounds — see why.
2. Total expense ratio
A broad tracker should cost somewhere around 0.07% to 0.22%. Anything materially above that for the same exposure needs a reason. A fee isn't a one-off cost, it's a permanent reduction in your growth rate.
3. Domicile
Irish-domiciled funds — almost all UK-listed UCITS ETFs — benefit from a treaty rate on US dividend withholding tax rather than the higher default. It's invisible on a factsheet and worth real money on a US-heavy fund held for decades.
4. Whether you can actually buy it
The famous US funds — VOO, SPY, VTI, QQQ — are generally blocked for UK retail investors because they don't publish the Key Information Document UK rules require. The UCITS versions listed in London are the equivalents, which is why the tickers look unfamiliar.
The overlap nobody checks
The instinct after buying one fund is to add another for diversification. Usually it isn't. In an S&P 500 tracker as at July 2026, the ten largest holdings were around 39% of the whole fund — NVIDIA roughly 7.9%, Apple 7.1%, Alphabet 6.1% across both share classes, Microsoft 5.2%, Amazon 4.1%, Broadcom 3.3%.
Add a Nasdaq fund and you own those same companies again at a higher weight. Add a technology or semiconductor fund and you own them a third time. Three funds, one bet, three fees. See how concentrated sector funds actually are.
Where a second fund genuinely adds something
If you already hold a global tracker, the exposures it under-represents are the ones worth considering — not more of what it already holds heavily. That generally means smaller companies, or bonds if you want something that behaves differently in a crisis rather than something that falls alongside your equities.
Adding a US, technology or growth fund on top of a global tracker does the opposite: it increases concentration in the largest companies while feeling like diversification.
What to check before buying any of them
Top ten weights, not the number of holdings
"Over 3,000 companies" tells you far less than "39% in ten".
Physical or synthetic
Physical funds own the shares. Synthetic ones use a swap with a counterparty. Both are legitimate; only one carries counterparty risk — see ETF vs ETC.
Fund size and spread
Very small funds can close or be merged, and thin trading widens the gap between buying and selling prices.
Your platform's dealing charges
A flat fee per trade matters enormously if you're investing monthly.
Know what's inside the wrapper
Oak Growth values roughly 1,000 companies across eight markets — including the handful that dominate almost every tracker you might buy.
Explore Oak GrowthCommon questions
What is the best ETF to invest in for UK investors?
For most people a single global all-world tracker such as VWRP or VWRL does the whole job, holding thousands of companies across developed and emerging markets for around 0.2% a year. S&P 500 trackers like VUSA, VUAG or CSPX are cheaper still but concentrate everything in the US, which is a view rather than a default.
How many ETFs should I hold?
Often one. A global tracker already holds thousands of companies, and adding a US, Nasdaq or technology fund on top mostly increases exposure to the same twenty largest businesses at a second fee. A second fund adds most when it covers something the first under-represents, such as smaller companies or bonds.
What is the difference between VUSA and VUAG?
The same portfolio with different dividend treatment. VUAG is accumulating and reinvests dividends inside the fund automatically; VUSA is distributing and pays them into your account. Accumulating suits long-term building, distributing suits someone taking an income.
Why can't UK investors buy VOO or SPY?
Those funds are US-domiciled and don't publish the Key Information Document that UK rules require, so brokers block retail purchases. UCITS equivalents listed in London do the same job — VUSA, VUAG or CSPX for the S&P 500, VWRP for a global fund, EQQQ for the Nasdaq-100.
Also see: Best performing ETFs → · What is an ETF? → · Best ETCs for UK investors →