Best Investment Platforms UK 2026: Honest Compar

Picking an investment platform sounds like a minor admin task. It is not. The platform you choose determines the fees you pay every single year, and fees compound just like your returns do. A seemingly tiny difference in charges can quietly drain tens of thousands from your portfolio over a couple of decades.

I have tested most of the major UK platforms at this point. Some are genuinely excellent. Others are coasting on brand recognition while charging you through the nose. Here is my honest comparison of the best investment platforms in the UK for 2026.

Why your platform choice matters more than you think

Let me show you with real numbers. Say you invest £500 per month for 20 years and your investments grow at an average of 7% per year. The only difference is the platform fee.

At a 0.15% platform fee (Vanguard), your pot grows to approximately £254,600. At a 0.45% platform fee (Hargreaves Lansdown), that same pot grows to roughly £243,200. That is a difference of around £11,400, and all you did was choose a different website to log into.

The gap gets even wider with larger portfolios or longer time horizons. On a £200,000 portfolio, the difference between 0.15% and 0.45% is £600 a year. Every year. For doing nothing differently.

Fees are the one thing you can control. You cannot control market returns. You can control what you pay.

The 7 best investment platforms compared

Here is a quick overview before I dig into each one.

Platform	Platform Fee	Fund Dealing	Min. Investment	Best For
Vanguard	0.15% (capped £375/yr)	Free	£100/month or £500 lump	Passive investors
InvestEngine	0% (DIY)	Free	£100	Cost-conscious ETF investors
AJ Bell	0.25% (shares capped £42/yr)	£1.50 regular, £5 one-off	£25/month or £500 lump	Intermediate investors
Hargreaves Lansdown	0.45% (tiered)	Free for funds, £11.95 shares	£25/month or £100 lump	Research and service
Interactive Investor	£4.99 to £11.99/month flat fee	Free regular, £3.99 one-off	£25/month	Larger portfolios
Trading 212	0%	Free	£1	Beginners, share dealing
Freetrade	£0 basic, £5.99/month for ISA	Free	£2	Young, mobile-first investors

Now let me break each one down properly.

1. Vanguard Investor

Platform fee: 0.15% (capped at £375 per year) Fund dealing: Free Minimum investment: £100 per month or £500 lump sum Best for: Long-term passive investors

Vanguard is the platform I point most people towards, and for good reason. If your strategy is buying index funds and leaving them alone (which is what most people should be doing), Vanguard is hard to beat. The 0.15% platform fee is among the lowest in the industry, and the cap at £375 means it becomes proportionally cheaper as your portfolio grows past £250,000.

The catch is that you can only buy Vanguard’s own funds. No individual shares, no third-party ETFs, no investment trusts. For most passive investors, this is not actually a problem because Vanguard’s fund range covers everything you need.

Verdict: The default choice for passive investors. If in doubt, start here.

2. InvestEngine

Platform fee: 0% for DIY investing Fund dealing: Free Minimum investment: £100 Best for: Cost-conscious ETF investors

InvestEngine’s zero platform fee still feels almost too good to be true, but it is legitimate. They make their money from their managed portfolio service (0.25%) and from interest on uninvested cash. The DIY investing side is genuinely free.

You are limited to ETFs only. No individual shares, no unit trusts, no OEICs. But the ETF range is broad, covering everything from global equity trackers to bond funds, and they support fractional shares on ETFs which makes drip-feeding easy.

Verdict: The cheapest way to invest in ETFs in the UK. Brilliant for beginners and cost-conscious investors alike.

3. AJ Bell

Platform fee: 0.25% for funds (uncapped), shares and ETFs capped at £42 per year Fund dealing: £1.50 regular dealing, £5 per trade one-off Minimum investment: £25 per month or £500 lump sum Best for: Intermediate investors who want range

AJ Bell is the all-rounder. You get access to funds, ETFs, investment trusts, individual shares, bonds, and ready-made portfolios all in one place. Their research tools are decent, the app works well, and the fee structure is competitive without being the cheapest.

The main downside is that the 0.25% platform fee on funds is uncapped, so it gets expensive if you have a large fund-based portfolio. If you hold mostly ETFs or shares though, the £42 annual cap makes it very competitive.

Verdict: The best middle ground. More flexibility than Vanguard, cheaper than Hargreaves Lansdown.

4. Hargreaves Lansdown

Platform fee: 0.45% (reducing to 0.25% on amounts over £250k) Fund dealing: Free for funds, £11.95 per share trade Minimum investment: £25 per month or £100 lump sum Best for: Investors who value research and customer service

Hargreaves Lansdown is the biggest investment platform in the UK, and they charge a premium for it. The 0.45% platform fee is the highest on this list by a comfortable margin. What you get in return is the best research, the widest fund selection, an excellent app, and customer service that actually picks up the phone.

Their Wealth Shortlist is genuinely useful for identifying quality funds, and the educational content is top-tier. If you are the kind of person who values having a slick, well-supported experience and you do not mind paying for it, HL delivers.

But let me be blunt. On a £100,000 portfolio, you are paying £450 a year in platform fees. At Vanguard, that same portfolio costs you £150. At InvestEngine, it costs you nothing. That £300 annual difference is buying you a nicer app and better customer service. Only you can decide if that is worth it.

Verdict: Premium service at premium prices. Worth it for some, unnecessary for most.

5. Interactive Investor

Platform fee: £4.99/month (Investor), £11.99/month (Super Investor) Fund dealing: One free trade per month on Investor plan, £3.99 per trade otherwise Minimum investment: £25 per month Best for: Larger portfolios

Interactive Investor charges a flat monthly fee rather than a percentage. This makes it relatively expensive for small portfolios but excellent value for larger ones. If you have £100,000 invested, the £11.99 monthly fee works out at 0.014% per year. That is dramatically cheaper than any percentage-based platform.

The platform itself is solid. Good range of investments, decent research tools, and they have been around for a long time. The tiered pricing was simplified in recent years, which makes it easier to understand what you are paying.

Verdict: The obvious choice once your portfolio grows past £50,000 or so. Less competitive for smaller pots.

6. Trading 212

Platform fee: 0% Fund dealing: Free Minimum investment: £1 Best for: Beginners, mixed shares and ETFs

Trading 212 offers commission-free trading on shares and ETFs with a £1 minimum and fractional shares. It is one of the most accessible platforms for absolute beginners. They earn their revenue through forex spreads and interest on cash balances, so the investing product itself is genuinely free.

The downsides? The app can feel like it encourages frequent trading, research tools are basic compared to AJ Bell or HL, and they have occasionally had waiting lists for new ISA accounts. The product range is more limited on the fund side too.

Verdict: A great starting point for beginners who want to try both shares and ETFs without paying fees.

7. Freetrade

Platform fee: Free (Basic), £5.99/month (Standard for ISA access), £11.99/month (Plus) Fund dealing: Free Minimum investment: £2 Best for: Young, mobile-first investors

Freetrade is a clean, modern, mobile-first platform. The free tier only covers a general investment account though. You need the Standard plan at £5.99 per month to access their stocks and shares ISA. The Plus tier adds interest on cash and access to additional stocks.

The monthly subscription model means Freetrade is not ideal for very small portfolios. If you are investing £100 per month, that £5.99 fee represents a nearly 6% charge, which is terrible value. But for larger portfolios where you want commission-free share dealing and a slick app, it works.

Verdict: Good for share dealing in an ISA if you are investing decent amounts. Poor value for small portfolios.

Which platform should you choose?

Let me simplify this into a decision tree.

Just starting out with small amounts? Go with InvestEngine or Trading 212. Both are free and have low minimums. InvestEngine if you want ETFs only, Trading 212 if you want individual shares too.

Want a simple, hands-off approach? Vanguard is your answer. Set up a monthly direct debit into a global index fund and walk away. It is what I recommend to most people.

Want more choice and flexibility? AJ Bell gives you the broadest range at a reasonable price. The best all-rounder.

Have a larger portfolio (£50k+)? Look seriously at Interactive Investor. The flat fee structure saves you real money at scale.

Value premium research and support? Hargreaves Lansdown, if you are happy paying for it.

One important rule change to know about

Since April 2024, you can open multiple ISAs of the same type in one tax year. That means you could have a Vanguard stocks and shares ISA for your index fund investing and a Trading 212 ISA for picking individual shares. The total across all your ISAs still cannot exceed £20,000 per tax year, but the flexibility is welcome.

I have covered all the latest changes in my ISA rules 2026 guide.

My pick

I use Vanguard for the bulk of my investing. A monthly direct debit into a global index fund, low fees, no fuss. It is not exciting and it is not meant to be. It just works.

If I were starting from scratch today with a small amount, I would probably open an InvestEngine account for the zero platform fee. And if my portfolio were north of £50,000, I would seriously consider Interactive Investor for the flat fee advantage.

But honestly, the platform matters less than the act of investing itself. The difference between a 0.15% and a 0% platform fee is tiny compared to the difference between investing and not investing at all. Pick one that feels right, set up a monthly contribution, and get started. You can always switch later.

For a guide on what to actually invest in once you have chosen a platform, read my best index funds in the UK article next.

Best Investment Platforms UK 2026: Honest Comparison