Development Intent
AtlasLambethOfficersKatherine Leftwich
Planning Atlas›Lambeth›Katherine Leftwich
Case officer · Lambeth Planning

Katherine Leftwich.

Active — last recorded decision May 2026

A case officer at Lambeth with an approval rate of 72% across 594 decided planning applications, spanning 29 wards.[1] Decision speed and appeal performance publish when decision notices are ingested.

Planning officer594 decisions72% approvalSave
Lambeth · 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 →
594
Applications
2021–26
Approval rate over time — tougher or softer 🔒Dashed line = London average
avg 81%75%202179%202249%202377%202487%202576%2026
Approval-rate trend is subscriber dataSubscribe to see the trend →
What they decide — by application type
How they compare — Versus peers
Approval rate72% · 48th of 72
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 reports

Not filled in yet — this needs at least 20 of Katherine Leftwich's own officer reports parsed, and their reports haven't reached that threshold in the parsing run. It fills automatically as parsing progresses; nothing is estimated in its place.

Policy playbook — what this officer cites[3]

The policies cited most on decision notices for applications Katherine Leftwich decided — 495 parsed notices. From the published notices themselves; their own report wording is parsed separately.

Q5Local distinctivenessLambeth plan
373 times cited
Q11Building alterations and extensionsLambeth plan
346 times cited
Q8Design quality: construction detailingLambeth plan
332 times cited
Q2AmenityLambeth plan
173 times cited
Q22Conservation areasLambeth plan
127 times cited
Q20Statutory listed buildingsLambeth plan
68 times cited
NPPFNPPF
60 times cited
Q6Urban design: public realmLambeth plan
33 times cited
Which policies this officer leans on is subscriber intelligenceSubscribe to unlock →
Decisions by ward
Ward
Decisions
Approval rate
100
77%
88
85%
84
54%
68
86%
42
64%
38
83%
35
70%
31
79%
24
70%
10
80%
9
78%
8
88%
8
50%
7
25%
6
100%
5
67%
5
33%
4
33%
3
33%
3
67%
3
50%
3
33%
2
0%
2
0%
2
50%
1
–
1
100%
1
0%
1
0%
100
77%
88
85%
84
54%
Show all 29 rows
68
86%
42
64%
38
83%
35
70%
31
79%
24
70%
10
80%
9
78%
8
88%
8
50%
7
25%
6
100%
5
67%
5
33%
4
33%
3
33%
3
67%
3
50%
3
33%
2
0%
2
0%
2
50%
1
–
1
100%
1
0%
1
0%

Where this officer's caseload concentrates, 2021–26.[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
26/00401/FUL
Full Planning Permission
Approved
2026-05-21
26/00770/FUL
Full Planning Permission
Approved
2026-05-21
26/00401/FUL
Full Planning Permission
Approved
2026-05-21
26/00770/FUL
Full Planning Permission
Approved
2026-05-21
Full application history locked
Subscribe to see all 594 decisions →
Consultants approved most— subscriber data
1. Baily Garner
2. Faithorn Farrell Timms
3. Potter Raper Ltd
4. Solutions30 UK
At a glance
OfficerKatherine Leftwich
BoroughLambeth
RolePlanning officer
Experience—
Applications594 (2021–26)
Approval rate72%
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 Lambeth planning register and published decision notices, 2021–26. · 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 Lambeth decision notices (grant/split), parsed from the published notice text; a borough figure, not yet split per case officer.
  4. [4]Policy citations will be coded from officer reports against the adopted Local Plan, London Plan and NPPF — that parsing has not run for this borough yet.
Methodology is published in full so every number is traceable to its primary source.