How to Compare Investment Platforms
6 July 2026 · 3 min read
Once you know roughly what you want to invest in (an index fund, within an ISA, say), you need a platform to actually hold it. Searching for the single "best" platform can be misleading, since the right one depends on how you invest, not just a headline ranking.
Fee structures vary more than people expect
Platforms typically charge in some combination of: a percentage-based platform fee, a flat annual or monthly fee, and/or dealing charges when you buy or sell. Percentage fees tend to favour investors with smaller portfolios; flat fees tend to favour investors with larger ones, since a fixed £X per year is a smaller percentage of a bigger pot. Work out roughly which fee structure suits your actual portfolio size, rather than assuming the platform with the lowest headline percentage is automatically cheapest for you.
Regular investing vs lump sums
If you plan to invest a regular monthly amount (see our getting started guide on why consistency matters), check whether a platform offers reduced or free regular investing deals, since dealing charges on frequent small monthly purchases can add up more than they would on an occasional larger lump sum.
Fund and investment range
Some platforms offer a huge range of funds, shares, and other investments; others offer a curated, smaller selection. A wider range isn't automatically better if you don't intend to use most of it — for many investors sticking to a small number of low-cost index funds, a platform with a smaller but well-chosen range is entirely sufficient, and sometimes cheaper.
ISA, pension and general account availability
Check that a platform actually offers the wrapper you want to use (Stocks and Shares ISA, and separately, a personal pension or SIPP if relevant) — not every platform offers every wrapper, and some charge differently for each.
Usability and app quality
Since you may be checking this account for decades, how easy the app or website is to use genuinely matters for staying engaged with your investments rather than ignoring them. This is a personal preference — trying a platform's free tools or demo before committing, where possible, is worthwhile.
Regulation and protection
UK investment platforms should be regulated by the Financial Conduct Authority (FCA) — check a platform's registration on the FCA register before depositing money. Investments held with FCA-regulated platforms are typically covered by the Financial Services Compensation Scheme up to a set limit if the platform itself fails (this doesn't protect against normal investment losses, only platform failure).
Switching platforms later
You are not locked into a platform forever — you can generally transfer investments (via an "in-specie" transfer, moving the actual investments rather than cash) to another platform later if your needs change, though transfer processes and any exit fees are worth checking before you commit somewhere in the first place.
This is general education, not personalised financial advice. Investing involves risk, including the risk of losing money, and past performance is not a guide to future returns. Nothing here recommends any specific investment — for anything genuinely complex or high-stakes, speak to a regulated financial adviser.
Common questions
Is a platform with a lower percentage fee always cheaper?+
Not necessarily — flat fees tend to suit larger portfolios better, while percentage fees tend to suit smaller portfolios. Work out which structure suits your actual portfolio size rather than comparing headline percentages alone.
Does a wider fund range make a platform better?+
Not automatically — a wide range only helps if you intend to use it. Many investors sticking to a small number of index funds are well served by a smaller, well-chosen, sometimes cheaper range.
How do I check if a platform is legitimate?+
Check its registration on the Financial Conduct Authority (FCA) register before depositing money. FCA-regulated platforms are typically covered by the Financial Services Compensation Scheme if the platform itself fails.
Can I move my investments to a different platform later?+
Yes, generally via an "in-specie" transfer that moves the actual investments rather than forcing a sale — check transfer processes and any exit fees before choosing a platform in the first place.
Do all platforms offer ISAs, pensions and general accounts?+
No — check that your chosen platform actually offers the specific wrapper you want (ISA, SIPP, etc.), since not every platform offers every option, and fees can differ between them.
Investment Platform Fees Explained: What You Are Actually Paying
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