Best Brokers in the UK: FCA-Regulated Picks for 2026
Our shortlist of FCA-regulated brokers with FSCS protection — ranked by fees, platform, ISA support, and SIPP availability.
Why FCA regulation matters for UK investors
The Financial Conduct Authority (FCA) is one of the world's strictest financial regulators. FCA-regulated brokers must segregate client money at approved UK banks, publish execution quality reports, meet minimum capital requirements, and provide clear pre- and post-trade disclosures. Crucially, FCA firms are members of the Financial Services Compensation Scheme (FSCS), which covers up to £85,000 per person per firm if the broker fails. That is not insurance against losing trades — it protects you against the broker itself collapsing or misusing client money.
Best overall for most UK investors: Trading 212
Commission-free stocks and ETFs, a genuinely free Stocks & Shares ISA (no platform fee, no dealing fee), 0.15% FX conversion — the cheapest of any UK app broker. Fractional shares, Pies and AutoInvest for automated portfolio building, and interest paid on uninvested GBP cash. FCA-regulated with FSCS coverage via Trading 212 UK Ltd. The main downside is no SIPP and no direct AIM access. For a first ISA or a straightforward long-term ETF portfolio, this is the default choice in 2026.
Best for retirement (SIPP): Interactive Investor and AJ Bell
For a Self-Invested Personal Pension, flat-fee platforms win once your pot passes £30,000–£50,000. Interactive Investor charges a flat £12.99/month for its investor plan (SIPP included) — the maths beats percentage-fee platforms for anyone with a serious pot. AJ Bell charges 0.25% up to £250k with dealing fees of £5 per online trade, capped at 0.25% total custody — cheaper than II for smaller pots, more expensive above about £120k. Vanguard's SIPP is the cheapest of all if you're happy to hold only Vanguard funds (0.15% capped at £375/year).
Best for active traders: Interactive Brokers UK
IBKR's UK entity gives you FCA regulation, FSCS coverage up to £85,000, and access to the same global markets, TWS platform, and institutional pricing as the parent. UK stocks trade at 0.05% commission with a £3 minimum. Crucially, IBKR's FX conversion at 0.002% is unbeatable — hugely relevant for UK investors buying US and European assets. No ISA, but if you want a general investing account with the widest global reach at the lowest cost, this is it.
Best for beginners on mobile: eToro UK and Freetrade
eToro UK is FCA-regulated with the friendliest onboarding and copy trading, but its FX and withdrawal fees make it expensive as your portfolio grows. Freetrade is the home-grown UK app with a proper ISA (£5.99/month) and SIPP (£11.99/month), commission-free trading, and a clean interface — best-in-class UK-first experience, though the free tier limits certain features.
ISA vs GIA vs SIPP — pick the right wrapper first
The wrapper matters more than the broker for most people. A Stocks & Shares ISA lets you invest up to £20,000 per tax year with no capital gains tax and no dividend tax, ever. A SIPP gets tax relief on contributions (basic rate added automatically, higher/additional rate claimed on your return) but is locked until age 55 (rising to 57 in 2028). A General Investment Account (GIA) has no tax benefits and every gain over the annual CGT allowance (£3,000 in 2026) is taxable. Fill your ISA every year before opening a GIA. Once your ISA is full and you have long-term retirement money, add a SIPP.
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