Sterling, FTSE and Foreign Earnings: Why a Weak Pound Can Lift UK Stocks
When sterling slid against the dollar again in early 2026, UK holidaymakers saw higher prices on their booking screens. UK investors looking at the FTSE 100 saw something else: a currency move that quietly raises the sterling value of many FTSE companies’ profits.
The structure of the index makes the mechanism straightforward. A large share of FTSE 100 constituents earn most of their revenues overseas, particularly in the US. A guide to the index’s record highs put it plainly: 'Many FTSE 100 companies earn revenue overseas. A weaker pound increases the value of foreign earnings when converted back into sterling.” Dartington Wealth’s 2026 note on sterling echoes this, arguing that while a falling pound pushes up the cost of imported goods and holidays, it can be “a benefit for certain investments", notably large UK‑listed multinationals whose foreign‑currency profits are translated into pounds.
Company‑level examples illustrate the point. Credit‑bureau Experian, for instance, generates more than two‑thirds of its sales in the US while catering group Compass earns around 66% of its revenue in North America, according to analysis from 2025. When “cable” — the pound‑dollar rate — weakens, each dollar of those US sales converts into more sterling, boosting reported earnings and the capacity to pay UK-denominated dividends. A similar pattern holds for many FTSE 100 names in sectors such as consumer goods, healthcare and industrials.
At the index level, this means periods of sterling weakness often coincide with relative strength in UK large caps, even when the domestic economy is under pressure. A weaker pound may signal investor concern about UK fiscal policy, growth or politics, but it simultaneously strengthens the reported numbers of globally diversified FTSE constituents. That interaction helps explain why, in 2025–26, UK stocks have at times “handled 2026 much better than the UK itself", as one Financial Times piece put it.
The balance is not universally positive. A soft pound raises input costs for UK-focused businesses that import goods or raw materials, and it directly squeezes household purchasing power. Domestic retailers, utilities and smaller caps with UK‑centric revenue bases may therefore struggle in the same FX environment that flatters the FTSE 100’s global champions. The net effect on UK equities depends on index composition: the large‑cap benchmark benefits from its global tilt, while more domestically orientated indices such as the FTSE 250 can be more sensitive to the downsides.
For investors in 2026, the lesson is to treat sterling as a key part of the FTSE 100’s return engine, not just a macro backdrop. A weaker pound can simultaneously hurt UK consumers and lift the index via translation gains on foreign earnings. Any assessment of UK equity prospects therefore needs to look at currency assumptions and the split between global and domestic revenue rather than taking “UK stocks” as a single, unified bet.