Associated British Foods (LSE:ABF) has told the market that its Sugar arm could lose anywhere between £70m and £170m in the coming year, and that unusually wide band now sits at the centre of the group's profit story.

A forecast range is usually a narrow corridor. The one Associated British Foods (LSE:ABF) published alongside its full-year results on Tuesday 3 November 2026 is closer to a broad avenue. Management expects its Sugar division to post an operating loss of somewhere between £70m and £170m in the 2027 financial year, with the final outcome hinging on gas costs, El Niño-affected output in Africa and currency movements.

That single line helped shape the market's reaction. ABF was among the FTSE 100's heavier fallers for much of the day, ending the session down 2.2% after trading roughly 3% lower around midday. The wider index closed at 10,638.43, down 1.14%, its steepest one-day drop in a month according to Reuters.

From a small loss to a large question mark

To understand why the range matters, it helps to see where Sugar has come from. In the 52 weeks to 12 September 2026, Sugar Revenue fell 9% and the division swung to a £47m operating loss. A year earlier, the loss had been just £1m, close enough to break-even that the Business barely registered as a drag.

The company pointed to four causes for the deterioration: lower selling prices in the UK, provisions taken against onerous contracts, higher gas costs and weaker crop yields. An onerous contract, in accounting terms, is one where the unavoidable costs of meeting the obligation are expected to exceed the economic benefits. The expected loss is generally recognised up front, which can pull a single period's result sharply lower.

The 2027 range implies that Sugar's losses could deepen from here, even at the more favourable end. The low point of the band is larger than this year's £47m loss, and the top end is considerably larger still. ABF itself was blunt about the link: its outlook statement said group adjusted operating profit and adjusted Earnings Per Share were expected to come in below 2026 levels "mainly due to Sugar".

Why the band is so wide

The three swing factors named by the company each carry their own uncertainty, and they do not necessarily move together.

Gas costs.Sugar processing is energy intensive, particularly the stages that involve heating and drying. When gas prices climb, the cost of turning beet or cane into finished sugar climbs with them. Energy markets have been volatile throughout the autumn: Brent Crude settled at $104.77 on Monday 2 November after a fall of more than 7% that day, and Reuters reported that elevated oil prices have fuelled Inflation fears more broadly.

El Niño-affected African output.El Niño is a recurring climate pattern that can alter rainfall and temperatures. For a crop-based business, poor growing conditions can reduce yields and leave processing Assets running below capacity.

Currency.A business that earns money in several currencies and reports in sterling will see its results shift as exchange rates move, even if nothing changes on the ground. Exchange rates can shift quickly, especially in a week dominated by a Central Bank decision.

Faced with three variables like these, ABF chose a wide range over a single number, and the width of the band arguably says as much about the operating environment as its midpoint.

Putting Sugar in group context

Sugar is a relatively small part of a very large group. ABF reported revenue of £19.6bn for the year, down 1% at constant currency, and adjusted operating profit of £1,508m, a decline of 14%. Adjusted earnings per share fell 11% to 156.0p.

For illustration only, consider how the range compares with that profit base. A £100m difference between the top and bottom of the Sugar band (£170m minus £70m) is equivalent to roughly 6.6% of the £1,508m adjusted operating profit reported for 2026, since £100m divided by £1,508m is about 0.066. That simple calculation is not a forecast; it merely shows why a swing within one division can move the group outcome in a noticeable way.

The other divisions offer a steadier backdrop, at least on management's own outlook. Grocery and Ingredients are both expected to be broadly in line with 2026, while Agriculture is expected to finish ahead. Primark, the retail arm, is guided to an adjusted Operating Margin of around 10%, with new space expected to add about 4% to sales growth. With most of the rest of the group pencilled in for stability, Sugar becomes the main variable in the year-on-year comparison.

The Sugar outlook lands at a sensitive moment. ABF is preparing to separate Primark from its food businesses, a demerger that the company said remains on track for December 2027. Once that happens, Sugar will sit within the food-focused group rather than alongside a large clothing retailer.

That matters because the relative weight of any single division changes when the group shrinks. In a smaller food business, a loss of a given size would represent a bigger share of overall profit than it does in today's combined company. The company has also scheduled a programme of investor events across 2027, including a Sugar & Agribusiness session in July, which may give the market more detail on how management intends to manage the division's cost base and exposure.

Separately, ABF said it does not plan further share Buybacks at this stage, preferring to keep both future businesses well financed ahead of the split.

Key dates to watch

Thu 5 Nov:Bank of England MPC decision, with a 25bp rise to 4% widely expected; a Factor for sterling and the wider index.

Thu 12 Nov:ONS first quarterly GDP estimate for July–September 2026, due at 7:00am.

Wed 2 Dec:FTSE Russell December quarterly review announcement, after the UK close.

April–July 2027:ABF investor events, including a Sugar & Agribusiness session in July.

December 2027:Planned Primark demerger from ABF's food business.

The bottom line

ABF's £70m-to-£170m Sugar loss range is less a precise forecast than a map of the risks the division faces. Gas prices, weather in Africa and currency movements are all outside management's direct control, and the company has chosen to be candid about how far they could push the result. Even the best case in the range is a wider loss than the £47m reported for 2026, and the company has attributed its expectation of lower group profit mainly to this one division.

For FTSE 100 watchers, the more useful question may be which of the three swing factors moves first. Energy prices have already shown how quickly they can shift. The investor events planned for 2027 should offer further chances to see whether Sugar is tracking towards the narrower or the wider end of its band.