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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: 325 A · 14 B · 5 C · 6 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	Aberdeen City Council	Scotland	£1,747.54	100	A
2	Aberdeenshire Council	Scotland	£1,686.04	100	A
3	Adur District Council	England	£2,535.33	100	A
4	Angus Council	Scotland	£1,598.65	100	A
5	Argyll and Bute Council	Scotland	£1,783.33	100	A
6	Ashford Borough Council	England	£2,342.93	100	A
7	Barnsley Metropolitan Borough Council	England	£2,317.38	100	A
8	Bassetlaw District Council	England	£2,595.49	100	A
9	Bexley London Borough Council	England	£2,366.36	100	A
10	Bolton Metropolitan Borough Council	England	£2,392.33	100	A
11	Boston Borough Council	England	£2,320.02	100	A
12	Bournemouth Christchurch and Poole Council	England	£2,399.99	100	A
13	Bracknell Forest Council	England	£2,281.56	100	A
14	Braintree District Council	England	£2,215.80	100	A
15	Brent London Borough Council	England	£2,235.27	100	A
16	Brighton and Hove City Council	England	£2,579.44	100	A
17	Bristol City Council	England	£2,713.68	100	A
18	Broadland District Council	England	£2,323.08	100	A
19	Bromley London Borough Council	England	£2,140.04	100	A
20	Broxtowe Borough Council	England	£2,582.05	100	A
21	Buckinghamshire Council	England	£2,418.35	100	A
22	Burnley Borough Council	England	£2,540.32	100	A
23	Caerphilly County Borough Council	Wales	£1,658.17	100	A
24	Cambridge City Council	England	£2,467.02	100	A
25	Cannock Chase District Council	England	£2,344.57	100	A
26	Ceredigion County Council	Wales	£2,538.78	100	A
27	Cheltenham Borough Council	England	£2,356.15	100	A
28	Chichester District Council	England	£2,370.07	100	A
29	City of Bradford Metropolitan District Council	England	£2,333.05	100	A
30	City of Doncaster Council	England	£2,176.24	100	A
31	City of London Corporation	England	£1,329.56	100	A
32	Conwy County Borough Council	Wales	£2,011.26	100	A
33	Cornwall Council	England	£2,590.93	100	A
34	Crawley Borough Council	England	£2,418.46	100	A
35	Cumberland Council	England	£2,444.72	100	A
36	Dacorum Borough Council	England	£2,381.40	100	A
37	Denbighshire County Council	Wales	£1,872.37	100	A
38	Derby City Council	England	£2,306.00	100	A
39	Dover District Council	England	£2,370.90	100	A
40	Dudley Metropolitan Borough Council	England	£2,144.84	100	A
41	Dumfries and Galloway Council	Scotland	£1,578.65	100	A
42	Dundee City Council	Scotland	£1,729.69	100	A
43	East Ayrshire Council	Scotland	£1,717.28	100	A
44	East Devon District Council	England	£2,480.97	100	A
45	East Dunbartonshire Council	Scotland	£1,751.67	100	A
46	East Lothian Council	Scotland	£1,697.62	100	A
47	East Renfrewshire Council	Scotland	£1,620.15	100	A
48	East Riding of Yorkshire Council	England	£1,964.47	100	A
49	East Suffolk Council	England	£2,233.98	100	A
50	Eastbourne Borough Council	England	£2,654.28	100	A
51	Elmbridge Borough Council	England	£2,556.87	100	A
52	Enfield London Borough Council	England	£2,267.67	100	A
53	Erewash Borough Council	England	£2,336.22	100	A
54	Fife Council	Scotland	£1,573.69	100	A
55	Gedling Borough Council	England	£2,583.76	100	A
56	Glasgow City Council	Scotland	£1,706.00	100	A
57	Gloucester City Council	England	£2,348.17	100	A
58	Gosport Borough Council	England	£2,344.29	100	A
59	Gravesham Borough Council	England	£2,388.63	100	A
60	Greenwich London Borough Council	England	£2,107.69	100	A
61	Hartlepool Borough Council	England	£2,556.88	100	A
62	Hastings Borough Council	England	£2,676.58	100	A
63	Herefordshire Council	England	£2,481.35	100	A
64	Hertsmere Borough Council	England	£2,357.21	100	A
65	Inverclyde Council	Scotland	£1,673.85	100	A
66	Isle of Anglesey County Council	Wales	£1,792.98	100	A
67	Isle of Wight Council	England	£2,487.07	100	A
68	Kingston upon Thames London Borough Council	England	£2,608.12	100	A
69	Leeds City Council	England	£2,271.51	100	A
70	Lewisham London Borough Council	England	£2,237.33	100	A
71	Liverpool City Council	England	£2,673.59	100	A
72	London Borough of Barnet	England	£2,132.60	100	A
73	London Borough of Croydon	England	£2,599.91	100	A
74	London Borough of Lambeth	England	£2,047.11	100	A
75	London Borough of Southwark	England	£1,967.26	100	A
76	London Borough of Tower Hamlets	England	£1,837.78	100	A
77	Luton Borough Council	England	£2,439.93	100	A
78	Mansfield District Council	England	£2,596.16	100	A
79	Medway Council	England	£2,319.29	100	A
80	Merthyr Tydfil County Council	Wales	£2,591.47	100	A
81	Mid Devon District Council	England	£2,550.34	100	A
82	Midlothian Council	Scotland	£1,816.16	100	A
83	Monmouthshire County Council	Wales	£2,416.50	100	A
84	Moray Council	Scotland	£1,731.14	100	A
85	Na h-Eileanan Siar Council	Scotland	£1,505.50	100	A
86	Neath Port Talbot County Council	Wales	£2,478.02	100	A
87	Newport City Council	Wales	£1,676.06	100	A
88	North Ayrshire Council	Scotland	£1,685.84	100	A
89	North East Lincolnshire Council	England	£2,463.23	100	A
90	North Hertfordshire District Council	England	£2,413.98	100	A
91	North Kesteven District Council	England	£2,206.26	100	A
92	North Lanarkshire Council	Scotland	£1,554.56	100	A
93	North Tyneside Metropolitan Borough Council	England	£2,461.77	100	A
94	North Yorkshire Council	England	£2,488.80	100	A
95	Nottingham City Council	England	£2,755.39	100	A
96	Nuneaton and Bedworth Borough Council	England	£2,502.16	100	A
97	Oadby and Wigston Borough Council	England	£2,406.85	100	A
98	Oldham Metropolitan Borough Council	England	£2,595.47	100	A
99	Orkney Islands Council	Scotland	£1,669.07	100	A
100	Pembrokeshire County Council	Wales	£1,727.96	100	A
101	Perth and Kinross Council	Scotland	£1,673.84	100	A
102	Peterborough City Council	England	£2,279.25	100	A
103	Plymouth City Council	England	£2,441.85	100	A
104	Portsmouth City Council	England	£2,291.71	100	A
105	Redbridge London Borough Council	England	£2,294.58	100	A
106	Richmond upon Thames London Borough Council	England	£2,486.10	100	A
107	Rochdale Metropolitan Borough Council	England	£2,600.83	100	A
108	Rossendale Borough Council	England	£2,516.04	100	A
109	Rotherham Metropolitan Borough Council	England	£2,319.61	100	A
110	Royal Borough of Kensington and Chelsea	England	£1,643.44	100	A
111	Royal Borough of Windsor and Maidenhead	England	£1,936.94	100	A
112	Rugby Borough Council	England	£2,494.62	100	A
113	Rushcliffe Borough Council	England	£2,545.21	100	A
114	Sandwell Metropolitan Borough Council	England	£2,244.46	100	A
115	Scottish Borders Council	Scotland	£1,618.52	100	A
116	Shetland Islands Council	Scotland	£1,487.90	100	A
117	Shropshire Council	England	£2,528.18	100	A
118	Somerset Council	England	£2,368.18	100	A
119	South Ayrshire Council	Scotland	£1,694.96	100	A
120	South Holland District Council	England	£2,221.02	100	A
121	South Lanarkshire Council	Scotland	£1,468.47	100	A
122	South Norfolk Council	England	£2,368.17	100	A
123	South Tyneside Metropolitan Borough Council	England	£2,434.43	100	A
124	Southampton City Council	England	£2,381.48	100	A
125	St Helens Metropolitan Borough Council	England	£2,394.87	100	A
126	Stevenage Borough Council	England	£2,391.97	100	A
127	Stirling Council	Scotland	£1,752.87	100	A
128	Stoke-on-Trent City Council	England	£2,183.12	100	A
129	Sunderland Metropolitan Borough Council	England	£2,196.25	100	A
130	Surrey Heath Borough Council	England	£2,562.00	100	A
131	Sutton London Borough Council	England	£2,378.64	100	A
132	Swale Borough Council	England	£2,356.32	100	A
133	Tandridge District Council	England	£2,550.85	100	A
134	Telford & Wrekin Council	England	£2,256.25	100	A
135	Tewkesbury Borough Council	England	£2,258.40	100	A
136	Thanet District Council	England	£2,440.71	100	A
137	The City of Edinburgh Council	Scotland	£1,626.05	100	A
138	The Highland Council	Scotland	£1,633.99	100	A
139	Thurrock Council	England	£2,254.68	100	A
140	Torbay Council	England	£2,456.99	100	A
141	Torfaen County Council	Wales	£2,151.90	100	A
142	Vale of Glamorgan County Council	Wales	£2,237.46	100	A
143	Vale of White Horse District Council	England	£2,471.75	100	A
144	Walsall Metropolitan Borough Council	England	£2,627.48	100	A
145	Waltham Forest London Borough Council	England	£2,386.96	100	A
146	Wandsworth Borough Council	England	£1,020.35	100	A
147	Watford Borough Council	England	£2,446.70	100	A
148	West Berkshire Council	England	£2,406.88	100	A
149	West Dunbartonshire Council	Scotland	£1,681.53	100	A
150	West Lancashire Borough Council	England	£2,434.63	100	A
151	West Lothian Council	Scotland	£1,627.59	100	A
152	Wigan Metropolitan Borough Council	England	£2,151.54	100	A
153	Wiltshire Council	England	£2,571.78	100	A
154	Wokingham Borough Council	England	£2,027.40	100	A
155	Wolverhampton Metropolitan Borough Council	England	£2,538.99	100	A
156	Amber Valley Borough Council	England	£2,407.69	90	A
157	Babergh District Council	England	£2,235.68	90	A
158	Barking and Dagenham London Borough Council	England	£2,198.50	90	A
159	Basildon Borough Council	England	£2,314.35	90	A
160	Basingstoke and Deane Borough Council	England	£2,224.83	90	A
161	Bath and North East Somerset Council	England	£2,325.27	90	A
162	Bedford Council	England	£2,431.59	90	A
163	Birmingham City Council	England	£2,353.17	90	A
164	Blackburn with Darwen Council	England	£2,450.09	90	A
165	Blackpool Council	England	£2,513.22	90	A
166	Blaenau Gwent County Council	Wales	£2,494.03	90	A
167	Bolsover District Council	England	£2,479.40	90	A
168	Breckland Council	England	£2,311.65	90	A
169	Brentwood Borough Council	England	£2,233.28	90	A
170	Bridgend County Council	Wales	£2,548.41	90	A
171	Broxbourne Borough Council	England	£2,306.43	90	A
172	Bury Metropolitan Borough Council	England	£2,555.15	90	A
173	Calderdale Metropolitan Borough Council	England	£2,401.96	90	A
174	Canterbury City Council	England	£2,397.99	90	A
175	Carmarthenshire County Council	Wales	£2,351.20	90	A
176	Castle Point Borough Council	England	£2,308.59	90	A
177	Central Bedfordshire Council	England	£2,351.85	90	A
178	Charnwood Borough Council	England	£2,291.84	90	A
179	Chelmsford City Council	England	£2,256.84	90	A
180	Cherwell District Council	England	£2,468.56	90	A
181	Cheshire East Council	England	£2,371.48	90	A
182	Cheshire West and Chester Council	England	£2,472.32	90	A
183	Chesterfield Borough Council	England	£2,318.39	90	A
184	City and County of Swansea	Wales	£2,212.52	90	A
185	City of Lincoln Council	England	£2,323.08	90	A
186	City of York Council	England	£2,269.91	90	A
187	Clackmannanshire Council	Scotland	£1,683.67	90	A
188	Colchester City Council	England	£2,240.94	90	A
189	Cotswold District Council	England	£2,267.97	90	A
190	Coventry City Council	England	£2,516.09	90	A
191	Darlington Borough Council	England	£2,485.73	90	A
192	Dartford Borough Council	England	£2,332.20	90	A
193	Dorset Council	England	£2,625.43	90	A
194	Durham County Council	England	£2,499.97	90	A
195	East Cambridgeshire District Council	England	£2,381.16	90	A
196	East Lindsey District Council	England	£2,182.77	90	A
197	Eastleigh Borough Council	England	£2,275.36	90	A
198	Epping Forest District Council	England	£2,186.91	90	A
199	Epsom and Ewell Borough Council	England	£2,530.84	90	A
200	Falkirk Council	Scotland	£1,715.09	90	A
201	Fareham Borough Council	England	£2,270.55	90	A
202	Fenland District Council	England	£2,481.30	90	A
203	Flintshire County Council	Wales	£2,313.17	90	A
204	Folkestone and Hythe District Council	England	£2,457.48	90	A
205	Forest of Dean District Council	England	£2,322.33	90	A
206	Fylde Borough Council	England	£2,400.84	90	A
207	Gateshead Metropolitan Borough Council	England	£2,715.52	90	A
208	Great Yarmouth Borough Council	England	£2,386.42	90	A
209	Guildford Borough Council	England	£2,501.18	90	A
210	Gwynedd County Council	Wales	£2,404.36	90	A
211	Halton Borough Council	England	£2,358.34	90	A
212	Harborough District Council	England	£2,287.14	90	A
213	Haringey London Borough Council	England	£2,313.78	90	A
214	Harlow District Council	England	£2,298.69	90	A
215	Harrow London Borough Council	England	£2,511.07	90	A
216	Havant Borough Council	England	£2,320.28	90	A
217	Havering London Borough Council	England	£2,424.66	90	A
218	High Peak Borough Council	England	£2,346.89	90	A
219	Hillingdon London Borough Council	England	£2,045.46	90	A
220	Hinckley and Bosworth Borough Council	England	£2,352.33	90	A
221	Horsham District Council	England	£2,352.37	90	A
222	Hounslow London Borough Council	England	£2,185.56	90	A
223	Huntingdonshire District Council	England	£2,398.81	90	A
224	Hyndburn Borough Council	England	£2,465.34	90	A
225	Ipswich Borough Council	England	£2,468.25	90	A
226	Kingston upon Hull City Council	England	£2,295.04	90	A
227	Kirklees Metropolitan Borough Council	England	£2,430.19	90	A
228	Knowsley Metropolitan Borough Council	England	£2,448.16	90	A
229	Lancaster City Council	England	£2,461.08	90	A
230	Leicester City Council	England	£2,528.75	90	A
231	Lewes District Council	England	£2,601.71	90	A
232	Lichfield District Council	England	£2,364.58	90	A
233	London Borough of Camden	England	£2,207.12	90	A
234	London Borough of Ealing	England	£2,138.53	90	A
235	London Borough of Hackney	England	£2,060.30	90	A
236	London Borough of Hammersmith and Fulham	England	£1,519.51	90	A
237	Maidstone Borough Council	England	£2,454.24	90	A
238	Maldon District Council	England	£2,267.25	90	A
239	Manchester City Council	England	£2,312.04	90	A
240	Melton Borough Council	England	£2,352.47	90	A
241	Merton London Borough Council	England	£2,140.52	90	A
242	Mid Suffolk District Council	England	£2,216.42	90	A
243	Mid Sussex District Council	England	£2,374.49	90	A
244	Middlesbrough Council	England	£2,548.05	90	A
245	Milton Keynes City Council	England	£2,270.19	90	A
246	Mole Valley District Council	England	£2,508.58	90	A
247	New Forest District Council	England	£2,285.33	90	A
248	Newark and Sherwood District Council	England	£2,582.04	90	A
249	Newham London Borough Council	England	£1,944.23	90	A
250	North Devon Council	England	£2,527.21	90	A
251	North East Derbyshire District Council	England	£2,394.90	90	A
252	North Lincolnshire Council	England	£2,293.48	90	A
253	North Norfolk District Council	England	£2,366.82	90	A
254	North Northamptonshire Council	England	£2,343.66	90	A
255	North West Leicestershire District Council	England	£2,310.27	90	A
256	Northumberland County Council	England	£2,493.67	90	A
257	Oxford City Council	England	£2,675.54	90	A
258	Pendle Borough Council	England	£2,505.59	90	A
259	Reading Borough Council	England	£2,223.18	90	A
260	Redcar and Cleveland Borough Council	England	£2,526.22	90	A
261	Redditch Borough Council	England	£2,460.46	90	A
262	Reigate and Banstead Borough Council	England	£2,555.86	90	A
263	Renfrewshire Council	Scotland	£1,690.56	90	A
264	Rhondda Cynon Taf County Council	Wales	£2,250.41	90	A
265	Ribble Valley Borough Council	England	£2,359.57	90	A
266	Rochford District Council	England	£2,282.67	90	A
267	Rother District Council	England	£2,576.64	90	A
268	Runnymede Borough Council	England	£2,492.99	90	A
269	Rushmoor Borough Council	England	£2,320.28	90	A
270	Rutland County Council	England	£2,670.21	90	A
271	Salford Metropolitan Borough Council	England	£2,594.45	90	A
272	Sefton Metropolitan Borough Council	England	£2,564.73	90	A
273	Sevenoaks District Council	England	£2,402.04	90	A
274	Sheffield City Council	England	£2,505.32	90	A
275	Slough Borough Council	England	£2,408.64	90	A
276	South Cambridgeshire District Council	England	£2,408.59	90	A
277	South Derbyshire District Council	England	£2,306.78	90	A
278	South Kesteven District Council	England	£2,189.17	90	A
279	South Oxfordshire District Council	England	£2,461.30	90	A
280	South Ribble Borough Council	England	£2,430.16	90	A
281	South Staffordshire District Council	England	£2,255.58	90	A
282	Southend-on-Sea City Council	England	£2,256.30	90	A
283	Spelthorne Borough Council	England	£2,526.49	90	A
284	St Albans City and District Council	England	£2,368.36	90	A
285	Stafford Borough Council	England	£2,336.84	90	A
286	Stockport Metropolitan Borough Council	England	£2,618.90	90	A
287	Stockton-on-Tees Borough Council	England	£2,572.10	90	A
288	Stratford-on-Avon District Council	England	£2,396.75	90	A
289	Stroud District Council	England	£2,354.39	90	A
290	Tameside Metropolitan Borough Council	England	£2,447.00	90	A
291	Tamworth Borough Council	England	£2,300.76	90	A
292	Teignbridge District Council	England	£2,512.38	90	A
293	Tendring District Council	England	£2,225.97	90	A
294	Test Valley Borough Council	England	£2,247.32	90	A
295	Three Rivers District Council	England	£2,404.73	90	A
296	Tonbridge and Malling Borough Council	England	£2,448.53	90	A
297	Torridge District Council	England	£2,505.06	90	A
298	Trafford Metropolitan Borough Council	England	£2,289.79	90	A
299	Tunbridge Wells Borough Council	England	£2,437.55	90	A
300	Uttlesford District Council	England	£2,197.25	90	A
301	Warrington Borough Council	England	£2,403.04	90	A
302	Warwick District Council	England	£2,415.78	90	A
303	Waverley Borough Council	England	£2,516.37	90	A
304	Wealden District Council	England	£2,580.83	90	A
305	Welwyn Hatfield Borough Council	England	£2,372.83	90	A
306	West Lindsey District Council	England	£2,262.24	90	A
307	West Oxfordshire District Council	England	£2,439.44	90	A
308	West Suffolk Council	England	£2,245.86	90	A
309	Westmorland and Furness Council	England	£2,456.81	90	A
310	Winchester City Council	England	£2,241.90	90	A
311	Wirral Metropolitan Borough Council	England	£2,500.59	90	A
312	Woking Borough Council	England	£2,598.04	90	A
313	Worcester City Council	England	£2,400.53	90	A
314	Worthing Borough Council	England	£2,456.13	90	A
315	Wyre Council	England	£2,428.93	90	A
316	Wyre Forest District Council	England	£2,432.60	90	A
317	Arun District Council	England	£2,393.31	85	A
318	Blaby District Council	England	£2,339.29	85	A
319	Cardiff Council	Wales	£2,008.86	85	A
320	Chorley Borough Council	England	£2,414.10	85	A
321	Exeter City Council	England	£2,495.36	85	A
322	Newcastle City Council	England	£2,540.66	85	A
323	Newcastle-under-Lyme Borough Council	England	£2,313.24	85	A
324	North Warwickshire Borough Council	England	£2,532.10	85	A
325	Norwich City Council	England	£2,503.43	85	A
326	North Somerset Council	England	—	80	B
327	Solihull Metropolitan Borough Council	England	£2,172.96	80	B
328	South Gloucestershire Council	England	—	80	B
329	Ashfield District Council	England	£2,596.64	75	B
330	Bromsgrove District Council	England	£2,439.70	75	B
331	East Hampshire District Council	England	£2,230.33	75	B
332	Hart District Council	England	£2,297.48	75	B
333	London Borough of Islington	England	£2,107.87	75	B
334	Preston City Council	England	£2,564.22	75	B
335	Westminster City Council	England	£1,047.85	75	B
336	Borough Council of King's Lynn and West Norfolk	England	£2,430.13	70	B
337	East Hertfordshire District Council	England	£2,345.22	70	B
338	Swindon Borough Council	England	£2,438.10	70	B
339	Wrexham County Borough Council	Wales	£2,308.88	70	B
340	Powys County Council	Wales	£1,872.09	60	C
341	Wakefield Metropolitan Borough Council	England	£1,881.82	60	C
342	Wychavon District Council	England	£2,302.73	60	C
343	Derbyshire Dales District Council	England	£2,360.07	50	C
344	Staffordshire Moorlands District Council	England	£2,263.97	50	C
345	Malvern Hills District Council	England	—	40	D
346	West Northamptonshire Council	England	—	40	D
347	Council of the Isles of Scilly	England	—	30	D
348	East Staffordshire Borough Council	England	—	30	D
349	South Hams District Council	England	—	30	D
350	West Devon Borough Council	England	—	30	D

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 325 of 350 councils score grade A (85+), 14 grade B, 5 grade C and 6 grade D under the published scoring method.