Shawarma price vs property price per m²: insufficient London sample
The current web scan matched only two London area observations pairing a listed shawarma price (GBP per item) with a residential sale price in £/m² — E12 and Islington — and the Islington property source needs manual verification. Two points cannot support a correlation estimate.
The entire matched dataset: two points
x: residential sale price, £ per m² (median). y: listed shawarma price, £ per item. Hover a point for detail.
matched observationunverified — property source URL names a different borough
E12: a £6.50 chicken shawarma wrap at E12 Wraps (menu published 12 Feb 2026) against a £5,070/m² median district sale price. chickenpizza.co.uk · housemetric.co.uk
Islington: a £7.99 regular wrap at Mono Wraps (menu dated 29 Oct 2023) against £9,390/m² — but the attached HouseMetric page URL says Hackney, so this pairing is unverified and should not be treated as validated. hampsteadvillagelondon.com · housemetric.co.uk
The mechanical Pearson and Spearman values both compute to 1.0 across the 2 paired areas — a guaranteed artefact of n=2, not evidence of any relationship. housemetric.co.uk
The two menu dates sit more than two years apart (Oct 2023 vs Feb 2026), so even these two prices are not measured on a comparable date. hampsteadvillagelondon.com
Why no correlation is reported
With n=2, any two distinct points aligned in the same direction produce a perfect rank correlation; the estimate carries no statistical meaning. The responsible finding is that there is insufficient matched data to estimate the requested London-wide relationship. A defensible analysis would need:
roughly 20–30 or more comparable restaurant–area pairs;
a standardised item — for example one regular chicken shawarma wrap — priced the same way everywhere;
property £/m² measured consistently for the same geography and the same period;
ideally several restaurants averaged within each area to smooth restaurant-level pricing.
Even then a correlation would not imply causation. Note also that the two menus carry mixed dates, and delivery or listing prices can differ from in-store prices.
Method: current web scan; 2 matched area observations, the only ones found. Each row pairs one listed shawarma price in GBP with a residential sale price in £/m² (median) extracted from a HouseMetric page; property periods were not stated on either page. Correlation values (Pearson 1.0, Spearman 1.0 over 2 paired areas) arrive precomputed and are shown only as a warning annotation because n=2 makes them uninterpretable. The Islington property source is flagged unverified because its URL names Hackney. Nothing was cut; the full result set is shown.