Your Portfolio Is 97% Foreign — The Case for Buying More Britain

The FTSE 100 is forecast to yield approximately 3.4% in 2026, according to [AJ Bell's dividend monitor](https://www.ajbell.co.uk/news/what-expect-ftse-100-dividends-2026). The S&P 500 yields 1.14%. Under current HMRC rules, UK investors receive a £1,000 dividend allowance — another structural advantage of income-focused UK equities. That is not a rounding error — it is a threefold difference in cash income.

For a retiree drawing down a £500,000 ISA portfolio, a FTSE-weighted allocation generates roughly £17,000 a year in dividends alone. The same money in an S&P 500 tracker produces £5,700. The gap — £11,300 a year — is the difference between a comfortable retirement and one that requires selling capital every quarter to pay the bills.

Selling capital in a falling market is the single most destructive thing a retiree can do. It locks in losses and accelerates depletion. Dividends, by contrast, arrive in cash regardless of what the share price did last week. The FTSE 100's income profile exists because the index is full of mature, cash-generative businesses — oil majors, banks, insurers, miners, consumer staples — that return profits to shareholders rather than reinvesting in speculative growth.

This is not an accident of history. The UK market developed around income-paying companies because British investors have always demanded it. The culture of dividends runs deep — from the privatisations of the 1980s through to the equity income funds that dominated ISA investing for decades. The S&P 500, by contrast, is dominated by companies that prefer share buybacks or reinvestment, leaving income-seeking investors with scraps.

Compound the difference over a 25-year retirement. At 3.4%, dividends alone return 85% of your initial capital over that period — before any reinvestment. At 1.14%, you get back just 28.5%. The income gap is not a marginal consideration. It is the structural backbone of a sustainable drawdown strategy.

The growth investor dismisses dividends as irrelevant. The retiree cannot afford to. If your savings need to generate income within the next ten years, the yield gap between UK and US equities is the single most important number in your portfolio.

For years, the consensus was simple: US stocks always win. Technology drives everything. The FTSE 100 is a dinosaur index full of old-economy businesses that will never compete with Silicon Valley. Then 2025 happened.

The FTSE 100 returned 21%. The S&P 500 returned 17%. The supposedly obsolete UK market outperformed the world's favourite index by four percentage points, as reported by ICAEW's analysis of global markets.

The very thing that made the FTSE 100 "boring" — its low technology weighting of just 3.5%, compared to roughly 33% for the S&P 500 — turned out to be an advantage. When AI hype cooled and regulators circled Big Tech, having almost no exposure to overvalued software companies was a feature, not a bug.

The ONS national accounts data confirms the broader pattern — UK corporate earnings growth has outpaced expectations. One year does not make a trend. But it demolishes the lazy assumption that US equities are a guaranteed winner. Concentration in any single market — even the US — is a risk, and 2025 proved that UK stocks are perfectly capable of leading when the cycle turns.

The investors who missed the FTSE 100's 21% rally were the same ones who spent the previous five years moving money out of UK funds and into US tech. They followed the herd. They chased past performance. And they paid for it in opportunity cost. The lesson is straightforward: the market that everyone hates is often the market that delivers the best returns, precisely because low expectations leave room for positive surprises.

Look at the broader pattern. The FTSE 100 started 2025 around 7,700 and ended the year above 9,300. That is a move driven not by speculative mania but by genuine earnings growth, rising dividends, and a belated recognition that UK companies were priced for catastrophe that never arrived.

Every pound you invest in unhedged US equities is a bet on the dollar. If the dollar falls 10% against sterling, your S&P 500 tracker loses 10% of its value in the currency you actually spend — even if the underlying shares went nowhere.

This is not a theoretical concern. Sterling has strengthened against the dollar in early 2026 as markets rotate out of US assets and into undervalued markets including the UK. The investor who held 90% in US equities lost purchasing power on the currency move alone.

Most global index trackers are unhedged. The average UK investor does not realise that their Vanguard Global All Cap fund carries enormous dollar exposure. They see "global diversification" on the tin. What they actually own is a 65% bet on the US dollar, a currency they do not earn and do not spend.

A UK-based investor with a mortgage, council tax, energy bills, and grocery costs denominated in pounds needs a meaningful portion of their investments denominated in the same currency. This is not home bias — it is currency matching. Pension funds do it. Insurance companies do it. Individual investors, for some reason, do not.

With the Bank of England base rate at 3.75% and UK gilt yields at 4.43%, sterling assets offer genuine real returns. There is no need to reach across the Atlantic for yield when it exists at home.

The counterargument is that currency movements wash out over decades. This is true in theory and irrelevant in practice. Retirees do not have decades. Someone entering drawdown at 60 faces a 10-to-15-year window where sequence-of-returns risk is at its highest. A sharp sterling rally during those critical early years — entirely plausible given how undervalued the pound remains — would devastate a dollar-heavy portfolio at precisely the worst moment.

The FTSE 100 trades on approximately 11 times earnings. The S&P 500 trades on approximately 21 times earnings. You are paying nearly double for every pound of profit when you buy US stocks compared to UK stocks.

Some of that discount is justified. The US has faster-growing companies, deeper capital markets, and a technology sector that dominates global innovation. But a 50% discount is extreme by any historical measure, and it has widened beyond what fundamentals alone can explain.

What explains the rest is flow. Global investors — including British ones — have spent a decade pouring money into US equities and pulling it out of the UK. That selling pressure has compressed UK valuations below fair value. The FTSE 100 sat at approximately 9,880 on 24 March 2026, down from its peak of 10,930 in February — a correction that has made already-cheap stocks cheaper still.

Mean reversion is the most powerful force in financial markets. Cheap assets do not stay cheap forever, and expensive assets do not stay expensive forever. The rotation out of US stocks and into UK and European equities that began in early 2026 is the market recognising what the data already shows: British companies generate real profits, pay real dividends, and trade at a fraction of what comparable US businesses cost.

The FCA's consumer duty now requires platforms to demonstrate they act in clients' best interests — yet most default fund ranges remain heavily skewed toward expensive US-dominated global trackers. Value investing requires patience and a willingness to buy what others are selling. Right now, the rest of the world is selling Britain. That is precisely when you should be buying.

Consider what you get for your money. At 11 times earnings, the FTSE 100 prices in almost no growth whatsoever. Any improvement in UK economic conditions — falling interest rates, stabilising house prices, a trade deal, even just a lack of new crises — acts as a catalyst. At 21 times earnings, the S&P 500 prices in perfection. Any disappointment — a recession, a regulatory crackdown, a single bad quarter from Nvidia — sends the index sharply lower. The asymmetry of risk is entirely in the UK's favour.

The simplest route is a FTSE All-Share tracker inside your ISA or SIPP. Vanguard FTSE UK All Share Index (OCF 0.06%) and iShares Core FTSE 100 ETF (OCF 0.07%) both do the job at negligible cost. If you hold a global tracker like Vanguard FTSE Global All Cap, your UK allocation is already approximately 3.3% — adding a dedicated UK fund alongside it gets you to 20-30% without selling anything.

For income-focused investors, the FTSE 100 equity income sector offers concentrated exposure to the highest-yielding UK companies. City of London Investment Trust has raised its dividend for 59 consecutive years. The tax treatment of dividends makes holding these inside an ISA particularly efficient — no income tax, no capital gains tax, just pure compounding.

Do not try to time the rebalance. Spread purchases over three to six months if the lump sum makes you uncomfortable. The point is not to catch the bottom — it is to correct an allocation that has drifted far from where it should be. Your mortgage, your energy bills, and your council tax do not care what the S&P 500 did last quarter. Your portfolio should reflect where you actually live.

This article is for informational purposes only and does not constitute financial advice. You should seek independent financial advice before making any investment decisions.

<p><strong>Related reading:</strong> <a href="/posts/stop-backing-britain-your-ftse-100-loyalty-is-the-most-expensive-mistake-in">the case against UK stocks</a> · <a href="/posts/best-etfs-for-uk-beginners-build-a-global-portfolio-for-under-025-a-year">best ETFs for beginners</a> · <a href="/investing">investing hub</a> · <a href="/stocks">UK stocks hub</a></p>