Best Investment Platforms UK 2026

We’ve compared the best investment platforms and Stocks & Shares ISAs available to UK investors right now. Whether you’re just starting out or managing a larger portfolio, here are the top platforms — updated regularly.

📅 Fees last verified: March 2026 | All investing involves risk — your capital is at risk and you may get back less than you invest.

*HL annual fee capped at £45/year for shares; **Freetrade ISA requires a £5.99/month plan. ☑️ All platforms are FCA-regulated and FSCS-protected up to £85,000. Smart Money HQ may receive a commission when you apply via our links — this never affects our editorial independence or ratings. Capital at risk.

How to Choose the Right Investment Platform

Fees matter most over the long term. Even a 0.1% difference in annual fees can cost thousands over a 20-year investment horizon. For smaller portfolios, flat-fee platforms become expensive — for larger ones, percentage-based caps make more sense.

ISA vs SIPP: A Stocks & Shares ISA lets you invest up to £20,000 per year tax-free with no tax on gains or income. A SIPP (pension) gives you upfront tax relief on contributions but locks your money until age 57. Most investors use both.

Active vs passive investing: Low-cost index funds (tracker funds or ETFs) simply follow a market index like the FTSE 100 or S&P 500. Research consistently shows that most actively managed funds underperform the index over time — index investing is the approach recommended by most independent financial experts.

Investing Costs to Watch Out For

• Platform fee: The annual charge to hold your investments — typically 0%–0.45% per year
• Fund charges (OCF): The cost of the fund itself — Vanguard index funds are as low as 0.06%; active funds often charge 0.75%+
• Dealing charges: Some platforms charge per trade — important if you plan to invest monthly in multiple funds
• Withdrawal fees: Most platforms are free, but SIPPs may have exit charges if you move providers