Decision review · 11 Sep 2026

Southern is losing volume and margin at the same time

Three options, one recommendation, and the number that would change our minds.

Press → or space to advance · N for the presenter window · ? for all keys

Snapshot · 31 Aug 2026
Decision review · 11 Sep 2026
Source: Finance DW

Where we are

Two of five regions now carry 71% of contribution

Contribution
€12.4m
▲ 4.2% vs FY25 Q3
Southern share
12.9%
▼ from 16.1%
Southern margin
12.1%
group 18.9%
Concentration
71%
top 2 regions

Source: Finance DW, extracted 31 Aug 2026. September excluded as an open period.

The pattern

The decline is steady, not a single bad month

Southern Group average

Contribution margin, %, closed periods only.

Diagnosis

We cannot yet separate price from mix

  1. Volume is down 9.4%
    Consistent across all four depots, so not a local failure.
  2. Realised price is down 3.1%
    Concentrated in two contracts renewed in March.
  3. Whether mix explains the rest
    The route-level cost feed has not delivered since July. This is the gap the diagnostic closes.
We are missing route-level cost. Any margin-bridge we build today would be an estimate presented as a fact.

Options

Three paths, with what each one costs to be wrong

OptionIn-quarter cost If we are rightIf we are wrong
Fund recovery now€1.8m Region stabilises by Q1€1.8m into a structural decline
Reallocate to North and Central€0.3m Contribution up ~€0.6mExit a market we could have kept
Diagnose first, decide in November€0.1m Decision made on evidenceSix weeks of continued bleed (~€0.2m)

Costs are directly attributable only; no overhead allocation.

Recommendation

Diagnose first — the option value exceeds the carry cost

Six weeks of bleed costs roughly €0.2m. Choosing wrong between the other two options costs between €0.6m and €1.8m. The diagnostic is cheap relative to the decision it informs.

  1. NowFreeze discretionary spend
  2. OctRoute diagnostic
  3. NovDecision point
  4. DecExecute

What would change our minds

If October volume falls below 82k shipments, we reallocate without waiting

That threshold is where the recovery case stops clearing its own cost of capital on any reasonable price assumption. It is measurable on 3 November.

Stating the falsifier in advance is what separates a recommendation from a preference.