The map · all 33 boroughs
Where the register is shared.
This is deliberately not a map of which borough does worst. A colour-coded map of survival or failure would hand you a league table, and the whole point of this study is that such a table is unstable. What it opens on is the measurement problem itself — the share of each borough’s food companies registered at an address they share with others. You can switch to the outcome measures, but only as a pair: each one is shown under both readings, and under the movement between them, because that movement is the finding.
Why this and not survival.
An address at which many companies are registered is a service address, not a shop. That is a normal, lawful part of professional practice — this practice provides registered-office services itself — but it means a borough’s registered companies are not the same set as the businesses trading on its streets. Where that share is high, any ranking built from registered offices is describing something other than the high street.
Select a borough and the panel shows both readings side by side: every registered office, and only addresses holding a single company. Where a borough has too few companies to give a reliable rate, the panel says so rather than showing a number that would not survive its own margin of error.
The full argument is in The Paper High Street; the counts behind it are in the Scorecard.