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Data confidence index

Name: UK council data confidence index 2026/27
Creator: CouncilData
License: https://creativecommons.org/licenses/by/4.0/

How verifiable is each council's published council tax data? Every council scores 0–100 on five reproducible checks. Grades: 334 A · 16 B · 0 C · 0 D. Low scores mostly mean data trapped in PDFs — the reason the corrections log exists. Freshness comes from the change tracker; the figures themselves are on the national table. Method details in the methodology.

Scoring (published, reproducible)

Two-pass verified 40 · full band table 20 · year-on-year change published 10 · verified within 30 days of latest sweep 15 · clean read, no typos/stale figures 15. Grade A ≥ 85, B ≥ 70, C ≥ 50.

#	Council	Nation	Band D	Score	Grade
1	Council of the Isles of Scilly	England	£2,047.96	100	A
2	East Staffordshire Borough Council	England	£2,351.34	100	A
3	Malvern Hills District Council	England	£2,450.92	100	A
4	South Hams District Council	England	£2,615.22	100	A
5	West Devon Borough Council	England	£2,705.33	100	A
6	West Northamptonshire Council	England	£2,486.66	100	A
7	Aberdeen City Council	Scotland	£1,747.54	85	A
8	Aberdeenshire Council	Scotland	£1,686.04	85	A
9	Adur District Council	England	£2,548.28	85	A
10	Amber Valley Borough Council	England	£2,407.69	85	A
11	Angus Council	Scotland	£1,598.65	85	A
12	Argyll and Bute Council	Scotland	£1,783.33	85	A
13	Ashford Borough Council	England	£2,410.16	85	A
14	Babergh District Council	England	£2,341.55	85	A
15	Barking and Dagenham London Borough Council	England	£2,198.51	85	A
16	Barnsley Metropolitan Borough Council	England	£2,325.96	85	A
17	Basildon Borough Council	England	£2,327.24	85	A
18	Basingstoke and Deane Borough Council	England	£2,255.21	85	A
19	Bassetlaw District Council	England	£2,644.95	85	A
20	Bath and North East Somerset Council	England	£2,383.42	85	A
21	Bedford Council	England	£2,471.74	85	A
22	Bexley London Borough Council	England	£2,366.36	85	A
23	Birmingham City Council	England	£2,362.90	85	A
24	Blackburn with Darwen Council	England	£2,455.27	85	A
25	Blackpool Council	England	£2,513.22	85	A
26	Blaenau Gwent County Council	Wales	£2,531.26	85	A
27	Bolsover District Council	England	£2,559.41	85	A
28	Bolton Metropolitan Borough Council	England	£2,399.74	85	A
29	Borough Council of King's Lynn and West Norfolk	England	£2,430.13	85	A
30	Boston Borough Council	England	£2,308.73	85	A
31	Bournemouth Christchurch and Poole Council	England	£2,435.58	85	A
32	Bracknell Forest Council	England	£2,264.80	85	A
33	Braintree District Council	England	£2,280.34	85	A
34	Breckland Council	England	£2,443.67	85	A
35	Brent London Borough Council	England	£2,235.27	85	A
36	Brentwood Borough Council	England	£2,258.14	85	A
37	Bridgend County Council	Wales	£2,477.99	85	A
38	Brighton and Hove City Council	England	£2,580.54	85	A
39	Bristol City Council	England	£2,713.68	85	A
40	Broadland District Council	England	£2,437.78	85	A
41	Bromley London Borough Council	England	£2,140.04	85	A
42	Broxbourne Borough Council	England	£2,306.43	85	A
43	Broxtowe Borough Council	England	£2,618.21	85	A
44	Buckinghamshire Council	England	£2,526.58	85	A
45	Burnley Borough Council	England	£2,549.42	85	A
46	Bury Metropolitan Borough Council	England	£2,555.15	85	A
47	Caerphilly County Borough Council	Wales	£2,082.88	85	A
48	Calderdale Metropolitan Borough Council	England	£2,420.15	85	A
49	Cambridge City Council	England	£2,467.02	85	A
50	Cannock Chase District Council	England	£2,375.83	85	A
51	Canterbury City Council	England	£2,419.33	85	A
52	Carmarthenshire County Council	Wales	£2,351.20	85	A
53	Castle Point Borough Council	England	£2,318.63	85	A
54	Central Bedfordshire Council	England	£2,516.16	85	A
55	Ceredigion County Council	Wales	£2,419.45	85	A
56	Charnwood Borough Council	England	£2,405.64	85	A
57	Chelmsford City Council	England	£2,300.18	85	A
58	Cheltenham Borough Council	England	£2,369.52	85	A
59	Cherwell District Council	England	£2,582.96	85	A
60	Cheshire East Council	England	£2,454.87	85	A
61	Cheshire West and Chester Council	England	£2,517.33	85	A
62	Chesterfield Borough Council	England	£2,339.49	85	A
63	Chichester District Council	England	£2,469.68	85	A
64	City and County of Swansea	Wales	£2,238.29	85	A
65	City of Bradford Metropolitan District Council	England	£2,360.73	85	A
66	City of Doncaster Council	England	£2,167.75	85	A
67	City of Lincoln Council	England	£2,323.08	85	A
68	City of London Corporation	England	£1,329.56	85	A
69	City of York Council	England	£2,287.15	85	A
70	Clackmannanshire Council	Scotland	£1,683.67	85	A
71	Colchester City Council	England	£2,282.85	85	A
72	Conwy County Borough Council	Wales	£2,472.82	85	A
73	Cornwall Council	England	£2,590.93	85	A
74	Cotswold District Council	England	£2,391.65	85	A
75	Coventry City Council	England	£2,516.72	85	A
76	Crawley Borough Council	England	£2,418.46	85	A
77	Cumberland Council	England	£2,511.32	85	A
78	Dacorum Borough Council	England	£2,408.51	85	A
79	Darlington Borough Council	England	£2,493.83	85	A
80	Dartford Borough Council	England	£2,375.15	85	A
81	Denbighshire County Council	Wales	£2,339.03	85	A
82	Derby City Council	England	£2,306.00	85	A
83	Derbyshire Dales District Council	England	£2,444.70	85	A
84	Dorset Council	England	£2,765.02	85	A
85	Dover District Council	England	£2,461.74	85	A
86	Dudley Metropolitan Borough Council	England	£2,144.84	85	A
87	Dumfries and Galloway Council	Scotland	£1,578.65	85	A
88	Dundee City Council	Scotland	£1,729.69	85	A
89	Durham County Council	England	£2,622.15	85	A
90	East Ayrshire Council	Scotland	£1,717.28	85	A
91	East Cambridgeshire District Council	England	£2,485.18	85	A
92	East Devon District Council	England	£2,595.46	85	A
93	East Dunbartonshire Council	Scotland	£1,751.67	85	A
94	East Hertfordshire District Council	England	£2,454.78	85	A
95	East Lindsey District Council	England	£2,275.88	85	A
96	East Lothian Council	Scotland	£1,697.62	85	A
97	East Renfrewshire Council	Scotland	£1,620.15	85	A
98	East Riding of Yorkshire Council	England	£2,466.08	85	A
99	East Suffolk Council	England	£2,334.80	85	A
100	Eastbourne Borough Council	England	£2,654.28	85	A
101	Eastleigh Borough Council	England	£2,342.21	85	A
102	Elmbridge Borough Council	England	£2,557.75	85	A
103	Enfield London Borough Council	England	£2,267.67	85	A
104	Epping Forest District Council	England	£2,277.21	85	A
105	Epsom and Ewell Borough Council	England	£2,530.84	85	A
106	Erewash Borough Council	England	£2,360.64	85	A
107	Falkirk Council	Scotland	£1,715.09	85	A
108	Fareham Borough Council	England	£2,270.55	85	A
109	Fenland District Council	England	£2,537.74	85	A
110	Fife Council	Scotland	£1,573.70	85	A
111	Flintshire County Council	Wales	£2,376.17	85	A
112	Folkestone and Hythe District Council	England	£2,538.75	85	A
113	Forest of Dean District Council	England	£2,443.42	85	A
114	Fylde Borough Council	England	£2,483.94	85	A
115	Gateshead Metropolitan Borough Council	England	£2,715.81	85	A
116	Gedling Borough Council	England	£2,609.55	85	A
117	Glasgow City Council	Scotland	£1,706.00	85	A
118	Gloucester City Council	England	£2,355.84	85	A
119	Gosport Borough Council	England	£2,344.29	85	A
120	Gravesham Borough Council	England	£2,408.24	85	A
121	Great Yarmouth Borough Council	England	£2,414.41	85	A
122	Greenwich London Borough Council	England	£2,107.86	85	A
123	Guildford Borough Council	England	£2,547.30	85	A
124	Gwynedd County Council	Wales	£2,468.77	85	A
125	Halton Borough Council	England	£2,366.61	85	A
126	Harborough District Council	England	£2,389.87	85	A
127	Haringey London Borough Council	England	£2,313.78	85	A
128	Harlow District Council	England	£2,298.69	85	A
129	Harrow London Borough Council	England	£2,511.07	85	A
130	Hartlepool Borough Council	England	£2,560.20	85	A
131	Hastings Borough Council	England	£2,676.58	85	A
132	Havant Borough Council	England	£2,320.28	85	A
133	Havering London Borough Council	England	£2,424.66	85	A
134	Herefordshire Council	England	£2,574.37	85	A
135	Hertsmere Borough Council	England	£2,405.83	85	A
136	High Peak Borough Council	England	£2,384.66	85	A
137	Hillingdon London Borough Council	England	£2,045.46	85	A
138	Hinckley and Bosworth Borough Council	England	£2,382.62	85	A
139	Horsham District Council	England	£2,441.01	85	A
140	Hounslow London Borough Council	England	£2,185.56	85	A
141	Huntingdonshire District Council	England	£2,556.40	85	A
142	Hyndburn Borough Council	England	£2,465.98	85	A
143	Inverclyde Council	Scotland	£1,673.85	85	A
144	Ipswich Borough Council	England	£2,468.25	85	A
145	Isle of Anglesey County Council	Wales	£2,260.73	85	A
146	Isle of Wight Council	England	£2,625.79	85	A
147	Kingston upon Hull City Council	England	£2,295.04	85	A
148	Kingston upon Thames London Borough Council	England	£2,609.20	85	A
149	Kirklees Metropolitan Borough Council	England	£2,441.07	85	A
150	Knowsley Metropolitan Borough Council	England	£2,488.25	85	A
151	Lancaster City Council	England	£2,503.19	85	A
152	Leeds City Council	England	£2,283.73	85	A
153	Leicester City Council	England	£2,528.75	85	A
154	Lewes District Council	England	£2,756.17	85	A
155	Lewisham London Borough Council	England	£2,237.33	85	A
156	Lichfield District Council	England	£2,351.90	85	A
157	Liverpool City Council	England	£2,673.59	85	A
158	London Borough of Barnet	England	£2,132.60	85	A
159	London Borough of Camden	England	£2,207.55	85	A
160	London Borough of Croydon	England	£2,599.91	85	A
161	London Borough of Ealing	England	£2,138.53	85	A
162	London Borough of Hackney	England	£2,060.30	85	A
163	London Borough of Hammersmith and Fulham	England	£1,519.51	85	A
164	London Borough of Lambeth	England	£2,047.11	85	A
165	London Borough of Southwark	England	£1,967.26	85	A
166	London Borough of Tower Hamlets	England	£1,837.78	85	A
167	Luton Borough Council	England	£2,439.93	85	A
168	Maidstone Borough Council	England	£2,502.59	85	A
169	Maldon District Council	England	£2,328.37	85	A
170	Manchester City Council	England	£2,312.04	85	A
171	Mansfield District Council	England	£2,600.38	85	A
172	Medway Council	England	£2,328.55	85	A
173	Melton Borough Council	England	£2,429.67	85	A
174	Merthyr Tydfil County Council	Wales	£2,593.60	85	A
175	Merton London Borough Council	England	£2,146.76	85	A
176	Mid Devon District Council	England	£2,656.41	85	A
177	Mid Suffolk District Council	England	£2,316.88	85	A
178	Mid Sussex District Council	England	£2,474.26	85	A
179	Middlesbrough Council	England	£2,549.16	85	A
180	Midlothian Council	Scotland	£1,816.16	85	A
181	Milton Keynes City Council	England	£2,372.21	85	A
182	Mole Valley District Council	England	£2,519.86	85	A
183	Monmouthshire County Council	Wales	£2,416.50	85	A
184	Moray Council	Scotland	£1,731.14	85	A
185	Na h-Eileanan Siar Council	Scotland	£1,505.50	85	A
186	Neath Port Talbot County Council	Wales	£2,541.39	85	A
187	New Forest District Council	England	£2,419.76	85	A
188	Newark and Sherwood District Council	England	£2,682.10	85	A
189	Newham London Borough Council	England	£1,944.23	85	A
190	Newport City Council	Wales	£2,088.48	85	A
191	North Ayrshire Council	Scotland	£1,685.84	85	A
192	North Devon Council	England	£2,642.21	85	A
193	North East Derbyshire District Council	England	£2,466.57	85	A
194	North East Lincolnshire Council	England	£2,483.85	85	A
195	North Hertfordshire District Council	England	£2,448.52	85	A
196	North Kesteven District Council	England	£2,337.81	85	A
197	North Lanarkshire Council	Scotland	£1,554.56	85	A
198	North Lincolnshire Council	England	£2,348.46	85	A
199	North Norfolk District Council	England	£2,459.93	85	A
200	North Northamptonshire Council	England	£2,423.96	85	A
201	North Somerset Council	England	£2,491.22	85	A
202	North Tyneside Metropolitan Borough Council	England	£2,461.77	85	A
203	North West Leicestershire District Council	England	£2,418.20	85	A
204	North Yorkshire Council	England	£2,544.34	85	A
205	Northumberland County Council	England	£2,596.94	85	A
206	Nottingham City Council	England	£2,755.39	85	A
207	Nuneaton and Bedworth Borough Council	England	£2,502.16	85	A
208	Oadby and Wigston Borough Council	England	£2,406.85	85	A
209	Oldham Metropolitan Borough Council	England	£2,602.23	85	A
210	Orkney Islands Council	Scotland	£1,669.07	85	A
211	Oxford City Council	England	£2,678.40	85	A
212	Pembrokeshire County Council	Wales	£2,166.15	85	A
213	Pendle Borough Council	England	£2,640.18	85	A
214	Perth and Kinross Council	Scotland	£1,673.84	85	A
215	Peterborough City Council	England	£2,293.47	85	A
216	Plymouth City Council	England	£2,441.85	85	A
217	Portsmouth City Council	England	£2,291.71	85	A
218	Powys County Council	Wales	£2,351.72	85	A
219	Reading Borough Council	England	£2,612.77	85	A
220	Redbridge London Borough Council	England	£2,294.58	85	A
221	Redcar and Cleveland Borough Council	England	£2,544.48	85	A
222	Redditch Borough Council	England	£2,462.95	85	A
223	Reigate and Banstead Borough Council	England	£2,566.61	85	A
224	Renfrewshire Council	Scotland	£1,690.56	85	A
225	Rhondda Cynon Taf County Council	Wales	£2,289.43	85	A
226	Ribble Valley Borough Council	England	£2,386.50	85	A
227	Richmond upon Thames London Borough Council	England	£2,486.10	85	A
228	Rochdale Metropolitan Borough Council	England	£2,600.83	85	A
229	Rochford District Council	England	£2,363.48	85	A
230	Rossendale Borough Council	England	£2,519.97	85	A
231	Rother District Council	England	£2,700.95	85	A
232	Rotherham Metropolitan Borough Council	England	£2,381.53	85	A
233	Royal Borough of Kensington and Chelsea	England	£1,666.65	85	A
234	Royal Borough of Windsor and Maidenhead	England	£1,952.62	85	A
235	Rugby Borough Council	England	£2,483.05	85	A
236	Runnymede Borough Council	England	£2,492.99	85	A
237	Rushcliffe Borough Council	England	£2,643.27	85	A
238	Rushmoor Borough Council	England	£2,320.28	85	A
239	Rutland County Council	England	£2,737.58	85	A
240	Salford Metropolitan Borough Council	England	£2,594.45	85	A
241	Sandwell Metropolitan Borough Council	England	£2,244.46	85	A
242	Scottish Borders Council	Scotland	£1,618.52	85	A
243	Sefton Metropolitan Borough Council	England	£2,583.22	85	A
244	Sevenoaks District Council	England	£2,522.36	85	A
245	Sheffield City Council	England	£2,510.16	85	A
246	Shetland Islands Council	Scotland	£1,487.90	85	A
247	Shropshire Council	England	£2,528.18	85	A
248	Slough Borough Council	England	£2,414.44	85	A
249	Solihull Metropolitan Borough Council	England	£2,197.26	85	A
250	Somerset Council	England	£2,560.59	85	A
251	South Ayrshire Council	Scotland	£1,694.96	85	A
252	South Cambridgeshire District Council	England	£2,536.25	85	A
253	South Derbyshire District Council	England	£2,339.61	85	A
254	South Gloucestershire Council	England	£2,550.59	85	A
255	South Holland District Council	England	£2,278.20	85	A
256	South Kesteven District Council	England	£2,260.00	85	A
257	South Lanarkshire Council	Scotland	£1,468.47	85	A
258	South Norfolk Council	England	£2,482.87	85	A
259	South Oxfordshire District Council	England	£2,597.57	85	A
260	South Ribble Borough Council	England	£2,442.66	85	A
261	South Staffordshire District Council	England	£2,313.67	85	A
262	South Tyneside Metropolitan Borough Council	England	£2,434.43	85	A
263	Southampton City Council	England	£2,381.48	85	A
264	Southend-on-Sea City Council	England	£2,265.17	85	A
265	Spelthorne Borough Council	England	£2,526.44	85	A
266	St Albans City and District Council	England	£2,419.22	85	A
267	St Helens Metropolitan Borough Council	England	£2,403.38	85	A
268	Stafford Borough Council	England	£2,302.68	85	A
269	Staffordshire Moorlands District Council	England	£2,338.21	85	A
270	Stevenage Borough Council	England	£2,391.97	85	A
271	Stirling Council	Scotland	£1,752.87	85	A
272	Stockport Metropolitan Borough Council	England	£2,618.90	85	A
273	Stockton-on-Tees Borough Council	England	£2,589.83	85	A
274	Stoke-on-Trent City Council	England	£2,183.12	85	A
275	Stratford-on-Avon District Council	England	£2,484.17	85	A
276	Stroud District Council	England	£2,491.36	85	A
277	Sunderland Metropolitan Borough Council	England	£2,197.14	85	A
278	Surrey Heath Borough Council	England	£2,585.16	85	A
279	Sutton London Borough Council	England	£2,378.64	85	A
280	Swale Borough Council	England	£2,405.65	85	A
281	Swindon Borough Council	England	£2,438.10	85	A
282	Tameside Metropolitan Borough Council	England	£2,447.21	85	A
283	Tamworth Borough Council	England	£2,300.76	85	A
284	Tandridge District Council	England	£2,594.85	85	A
285	Teignbridge District Council	England	£2,643.12	85	A
286	Telford & Wrekin Council	England	£2,256.26	85	A
287	Tendring District Council	England	£2,269.63	85	A
288	Test Valley Borough Council	England	£2,305.52	85	A
289	Tewkesbury Borough Council	England	£2,340.53	85	A
290	Thanet District Council	England	£2,490.90	85	A
291	The City of Edinburgh Council	Scotland	£1,626.05	85	A
292	The Highland Council	Scotland	£1,633.99	85	A
293	Three Rivers District Council	England	£2,422.31	85	A
294	Thurrock Council	England	£2,254.68	85	A
295	Tonbridge and Malling Borough Council	England	£2,471.83	85	A
296	Torbay Council	England	£2,470.25	85	A
297	Torfaen County Council	Wales	£2,155.68	85	A
298	Torridge District Council	England	£2,601.42	85	A
299	Trafford Metropolitan Borough Council	England	£2,291.70	85	A
300	Tunbridge Wells Borough Council	England	£2,446.15	85	A
301	Uttlesford District Council	England	£2,333.82	85	A
302	Vale of Glamorgan County Council	Wales	£2,231.54	85	A
303	Vale of White Horse District Council	England	£2,577.44	85	A
304	Wakefield Metropolitan Borough Council	England	£2,296.89	85	A
305	Walsall Metropolitan Borough Council	England	£2,627.48	85	A
306	Waltham Forest London Borough Council	England	£2,386.96	85	A
307	Wandsworth Borough Council	England	£1,028.21	85	A
308	Warrington Borough Council	England	£2,447.61	85	A
309	Warwick District Council	England	£2,461.55	85	A
310	Watford Borough Council	England	£2,446.70	85	A
311	Waverley Borough Council	England	£2,604.87	85	A
312	Wealden District Council	England	£2,728.43	85	A
313	Welwyn Hatfield Borough Council	England	£2,452.26	85	A
314	West Berkshire Council	England	£2,505.37	85	A
315	West Dunbartonshire Council	Scotland	£1,681.53	85	A
316	West Lancashire Borough Council	England	£2,456.23	85	A
317	West Lindsey District Council	England	£2,354.25	85	A
318	West Lothian Council	Scotland	£1,627.59	85	A
319	West Oxfordshire District Council	England	£2,566.95	85	A
320	West Suffolk Council	England	£2,351.47	85	A
321	Westmorland and Furness Council	England	£2,507.99	85	A
322	Wigan Metropolitan Borough Council	England	£2,152.68	85	A
323	Wiltshire Council	England	£2,571.78	85	A
324	Winchester City Council	England	£2,359.76	85	A
325	Wirral Metropolitan Borough Council	England	£2,500.59	85	A
326	Woking Borough Council	England	£2,598.04	85	A
327	Wokingham Borough Council	England	£2,497.70	85	A
328	Wolverhampton Metropolitan Borough Council	England	£2,538.99	85	A
329	Worcester City Council	England	£2,405.81	85	A
330	Worthing Borough Council	England	£2,456.13	85	A
331	Wrexham County Borough Council	Wales	£2,308.88	85	A
332	Wychavon District Council	England	£2,373.19	85	A
333	Wyre Council	England	£2,460.53	85	A
334	Wyre Forest District Council	England	£2,512.47	85	A
335	Arun District Council	England	£2,487.24	70	B
336	Ashfield District Council	England	£2,608.76	70	B
337	Blaby District Council	England	£2,490.22	70	B
338	Bromsgrove District Council	England	£2,478.65	70	B
339	Cardiff Council	Wales	£2,013.18	70	B
340	Chorley Borough Council	England	£2,430.23	70	B
341	East Hampshire District Council	England	£2,343.92	70	B
342	Exeter City Council	England	£2,495.36	70	B
343	Hart District Council	England	£2,400.02	70	B
344	London Borough of Islington	England	£2,108.15	70	B
345	Newcastle City Council	England	£2,542.19	70	B
346	Newcastle-under-Lyme Borough Council	England	£2,334.25	70	B
347	North Warwickshire Borough Council	England	£2,532.10	70	B
348	Norwich City Council	England	£2,503.44	70	B
349	Preston City Council	England	£2,575.74	70	B
350	Westminster City Council	England	£1,049.55	70	B

Frequently asked

What is the CouncilData data confidence index?+

A 0–100 score for each of the 350 UK billing authorities measuring how verifiable its published council tax data is: two-pass verification against the council's own page (40 points), a complete band table (20), a published year-on-year change (10), verification within 30 days of the latest sweep (15), and a clean read with no typos, stale figures or extraction cautions (15).

Which councils score lowest for data quality?+

The lowest scores go to councils whose 2026/27 figures could not be verified from an accessible primary source — typically because charges are published only in binary documents or JavaScript-rendered pages. Their records are flagged rather than estimated.

Is this a judgement of the council itself?+

No — it measures how findable, complete and machine-verifiable the council's published council tax data is, not service quality or value for money. A low score usually means the data lives in a PDF or spreadsheet rather than an accessible page.

How many councils get grade A?+

Currently 334 of 350 councils score grade A (85+), 16 grade B, 0 grade C and 0 grade D under the published scoring method.