Development Intent
AtlasWestminsterOfficersSarah Whitnall
Case officer · Westminster Planning

Sarah Whitnall.

Active — last recorded decision Mar 2026

A case officer at Westminster with an approval rate of 75% across 108 decided planning applications, spanning 14 wards.[1] Decision speed and appeal performance publish when decision notices are ingested.

Planning officer108 decisions75% approvalSave
Westminster · ward map
Approval rate — by ward
Lower ~68%
Higher ~90%
ShowingAll years · subscriber →across all years on record — a period re-scopes the headline figures and the trend
At a glanceEach metric links to the investigation behind it
All investigations →
108
Applications
2020–26
Approval rate over time — tougher or softer 🔒Dashed line = London average
avg 81%57%202059%202181%202281%202386%202483%20250%2026
Approval-rate trend is subscriber dataSubscribe to see the trend →
What they decide — by application type
How they compareVersus peers
Approval rate75% · 73rd of 76
higher is betterdashed = London avg
Decision time · publishes with decision notices
in development
Appeal overturn · publishes with decision notices
in development
How this officer decides — from their own reports93 officer reports parsed
24%
Approves despite concerns
of approvals record a documented reservation
49%
Negotiated approvals
approvals mentioning revisions/amendments
10%
"On balance" reports
reports using explicit balancing language
91%
Bespoke reasoning
of report text written for the case, not recited
What they write about — vs Westminster's average officer

Topic mentions per 1,000 words of their own report text (boilerplate stripped), indexed against all parsed Westminster reports. Attention, not stance.

Energy & sustainability
2.61× borough avg
Trees & landscape
2.32× borough avg
Transport & parking
2.09× borough avg
Daylight & sunlight
1.18× borough avg
Flooding & drainage
1.08× borough avg

Mark = borough average (1×). Bar capped at 2×.

How they reason — coded from their reports

Whitnall's larger commercial redevelopment reports carry detailed window-by-window daylight/sunlight tables and accept modest BRE-tolerance breaches (up to ~27%) where either the base level was already low or dual-aspect rooms provide alternative light. She refuses entertainment/gaming uses OUTSIDE the CAZ where a specific named UDP policy (TACE12) categorically prohibits the use type in that location, regardless of individual amenity mitigation, and refuses temporary retention of unauthorised structures where planning history (a prior refusal, a dismissed appeal) already established the harm.

Observable habits

· tabulates daylight/sunlight losses window by window against the BRE 20% tolerance, accepting modest breaches where the base level was already low or dual-aspect rooms provide alternative light

· refuses a use type outright where a specific named policy categorically prohibits it in that location (e.g. Adult Gaming Centres outside the CAZ under TACE12), regardless of individual amenity mitigation offered

· refuses continued/temporary retention of an unauthorised structure where the site's own planning history (a prior refusal, a dismissed appeal) already established the harm, rather than reassessing from scratch

What their reports consistently look for

· what this officer's reports consistently look for: window-by-window daylight/sunlight loss figures against the BRE 20% tolerance, with base level and dual-aspect context

· what this officer's reports consistently look for: whether a specific named policy categorically prohibits a use type in the proposed location, regardless of individual mitigation

· what this officer's reports consistently look for: whether a site's own planning history (a prior refusal, a dismissed appeal) already established that a structure causes harm

Assigned Sarah Whitnall on a live case?What they pay attention to, how they reason, and what their reports consistently look for — so you can address it before they raise it.Subscribe to unlock →
In their own words

the proposed use as an Adult Gaming Centre outside of the Central Activities Zone (CAZ) is contrary to Policy TACE12 of our UDP, which states that permission will not be granted for such uses outside of the CAZ

20/06000/FULL

It is clear from the planning history of the site, including enforcement investigations and a dismissed appeal that interested parties are aware of the unauthor

20/08131/FULL

Measured from 93 published Westminster officer reports written by this officer, with recited policy boilerplate stripped before any counting. These describe how this officer works and writes — they are not outcome predictions. Every quote is from a named public report.

Policy playbook — what this officer cites[3]

The policies this officer cites most in their own reports — times cited across 93 parsed reports. Whether refusals citing each survive appeal isn't traced per policy yet.

T5
5 times cited
ENV13
3 times cited
DES 5
3 times cited
DES 1
3 times cited
DES 9
3 times cited
S19
2 times cited
S29
2 times cited
S24
2 times cited
Which policies this officer leans on is subscriber intelligenceSubscribe to unlock →
Decisions by ward

Where this officer's caseload concentrates, 2020–26.[1] Click the map above to focus this page on a ward, or a row to open the ward.

Recent applications
Address
Reference
Type
Outcome
Date
26/02093/FULL
Full Planning Permission Application
Refused
2026-06-09
25/06289/FULL
Full Planning Permission Application
2026-04-28
26/02093/FULL
Full Planning Permission Application
Refused
2026-06-09
25/06289/FULL
Full Planning Permission Application
2026-04-28
Full application history locked
Subscribe to see all 108 decisions →
Consultants approved most— subscriber data
1. Gerald Eve LLP
2. DP9 Limited
3. Turley
4. Iceni Projects
At a glance
OfficerSarah Whitnall
RolePlanning officer
Experience
Applications108 (2020–26)
Approval rate75%
London approval avg81%
Who decides here
GovernmentMayor of LondonCouncilCommitteeOfficersDecisionsApplicantsInspectorate
Related investigations
When committees overrule officers like this one →
How often members depart from officer recommendations, and how those overrides fare at appeal.
How much gets decided without a committee →
The delegated share by borough and officer — where the real power over decisions sits.
Sources & method
  1. [1]Applications decided, approval rate, per-year trend and ward breakdown — London Borough of Westminster planning register and published decision notices, 2020–26. · methodology
  2. [2]Appeal overturn and decision-time benchmarks — Planning Inspectorate (PINS) appeal decisions and application date pairs; not yet computed per officer, shown as a dash until they are. · PINS appeals casework
  3. [3]Condition load — mean effective conditions attached to Westminster decision notices (grant/split), parsed from the published notice text; a borough figure, not yet split per case officer.
  4. [4]"How this officer decides", the policy playbook and all quotes — parsed from 93 published Westminster officer reports written by this officer, recited policy boilerplate stripped before counting; disposition text coded from their own reasoning with every quote machine-verified verbatim. Descriptive of how they work — not outcome predictions.
Methodology is published in full so every number is traceable to its primary source.