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NHS waiting lists: estimate of unique patients, March 2022 onwards

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Standard shorthand is used in this table: [b] = break in time series, [x] = not available.

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Date ( of 42 selected42 selectable options)

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Local health board ( of 8 selected8 selectable options)

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Data valuesData descriptionDateLocal health board
[x]Estimate of unique patientsOctober 2025Wales
[x]Estimate of unique patientsOctober 2025Betsi Cadwaladr
7,410Estimate of unique patientsOctober 2025Powys
64,502Estimate of unique patientsOctober 2025Hywel Dda
106,639Estimate of unique patientsOctober 2025Aneurin Bevan
115,425Estimate of unique patientsOctober 2025Cardiff & Vale
78,532Estimate of unique patientsOctober 2025Cwm Taf Morgannwg
76,134Estimate of unique patientsOctober 2025Swansea Bay
[x]Estimate of unique patientsSeptember 2025Wales
[x]Estimate of unique patientsSeptember 2025Betsi Cadwaladr
7,404Estimate of unique patientsSeptember 2025Powys
65,047Estimate of unique patientsSeptember 2025Hywel Dda
111,609Estimate of unique patientsSeptember 2025Aneurin Bevan
116,049Estimate of unique patientsSeptember 2025Cardiff & Vale
81,271Estimate of unique patientsSeptember 2025Cwm Taf Morgannwg
77,203Estimate of unique patientsSeptember 2025Swansea Bay
613,654Estimate of unique patientsAugust 2025Wales
151,648Estimate of unique patientsAugust 2025Betsi Cadwaladr
7,313Estimate of unique patientsAugust 2025Powys
65,164Estimate of unique patientsAugust 2025Hywel Dda
113,029Estimate of unique patientsAugust 2025Aneurin Bevan
116,219Estimate of unique patientsAugust 2025Cardiff & Vale
81,662Estimate of unique patientsAugust 2025Cwm Taf Morgannwg
78,619Estimate of unique patientsAugust 2025Swansea Bay
613,357Estimate of unique patientsJuly 2025Wales
152,523Estimate of unique patientsJuly 2025Betsi Cadwaladr
7,436Estimate of unique patientsJuly 2025Powys
65,329Estimate of unique patientsJuly 2025Hywel Dda
109,900Estimate of unique patientsJuly 2025Aneurin Bevan
116,715Estimate of unique patientsJuly 2025Cardiff & Vale
82,777Estimate of unique patientsJuly 2025Cwm Taf Morgannwg
78,677Estimate of unique patientsJuly 2025Swansea Bay
612,168Estimate of unique patientsJune 2025Wales
151,920Estimate of unique patientsJune 2025Betsi Cadwaladr
7,383Estimate of unique patientsJune 2025Powys
65,745Estimate of unique patientsJune 2025Hywel Dda
108,792Estimate of unique patientsJune 2025Aneurin Bevan
117,337Estimate of unique patientsJune 2025Cardiff & Vale
82,779Estimate of unique patientsJune 2025Cwm Taf Morgannwg
78,212Estimate of unique patientsJune 2025Swansea Bay
614,327Estimate of unique patientsMay 2025Wales
152,473Estimate of unique patientsMay 2025Betsi Cadwaladr
7,501Estimate of unique patientsMay 2025Powys
65,461Estimate of unique patientsMay 2025Hywel Dda
108,648Estimate of unique patientsMay 2025Aneurin Bevan
117,971Estimate of unique patientsMay 2025Cardiff & Vale
83,960Estimate of unique patientsMay 2025Cwm Taf Morgannwg
78,313Estimate of unique patientsMay 2025Swansea Bay
611,129Estimate of unique patientsApril 2025Wales
151,697Estimate of unique patientsApril 2025Betsi Cadwaladr
7,191Estimate of unique patientsApril 2025Powys
64,885Estimate of unique patientsApril 2025Hywel Dda
107,246Estimate of unique patientsApril 2025Aneurin Bevan
117,579Estimate of unique patientsApril 2025Cardiff & Vale
84,483Estimate of unique patientsApril 2025Cwm Taf Morgannwg
78,048Estimate of unique patientsApril 2025Swansea Bay
608,559Estimate of unique patientsMarch 2025Wales
150,930Estimate of unique patientsMarch 2025Betsi Cadwaladr
6,997Estimate of unique patientsMarch 2025Powys
64,288Estimate of unique patientsMarch 2025Hywel Dda
107,731Estimate of unique patientsMarch 2025Aneurin Bevan
116,298Estimate of unique patientsMarch 2025Cardiff & Vale
84,700Estimate of unique patientsMarch 2025Cwm Taf Morgannwg
77,615Estimate of unique patientsMarch 2025Swansea Bay
614,150Estimate of unique patientsFebruary 2025Wales
151,035Estimate of unique patientsFebruary 2025Betsi Cadwaladr
6,826Estimate of unique patientsFebruary 2025Powys
64,811Estimate of unique patientsFebruary 2025Hywel Dda
112,365Estimate of unique patientsFebruary 2025Aneurin Bevan
116,422Estimate of unique patientsFebruary 2025Cardiff & Vale
85,002Estimate of unique patientsFebruary 2025Cwm Taf Morgannwg
77,689Estimate of unique patientsFebruary 2025Swansea Bay
613,328Estimate of unique patientsJanuary 2025Wales
151,157Estimate of unique patientsJanuary 2025Betsi Cadwaladr
6,662Estimate of unique patientsJanuary 2025Powys
64,870Estimate of unique patientsJanuary 2025Hywel Dda
109,446Estimate of unique patientsJanuary 2025Aneurin Bevan
117,939Estimate of unique patientsJanuary 2025Cardiff & Vale
85,738Estimate of unique patientsJanuary 2025Cwm Taf Morgannwg
77,516Estimate of unique patientsJanuary 2025Swansea Bay
616,547Estimate of unique patientsDecember 2024Wales
151,537Estimate of unique patientsDecember 2024Betsi Cadwaladr
6,624Estimate of unique patientsDecember 2024Powys
65,334Estimate of unique patientsDecember 2024Hywel Dda
110,280Estimate of unique patientsDecember 2024Aneurin Bevan
118,913Estimate of unique patientsDecember 2024Cardiff & Vale
86,455Estimate of unique patientsDecember 2024Cwm Taf Morgannwg
77,404Estimate of unique patientsDecember 2024Swansea Bay
619,076Estimate of unique patientsNovember 2024Wales
151,330Estimate of unique patientsNovember 2024Betsi Cadwaladr
6,667Estimate of unique patientsNovember 2024Powys
65,463Estimate of unique patientsNovember 2024Hywel Dda
111,691Estimate of unique patientsNovember 2024Aneurin Bevan
119,020Estimate of unique patientsNovember 2024Cardiff & Vale
86,560Estimate of unique patientsNovember 2024Cwm Taf Morgannwg
78,345Estimate of unique patientsNovember 2024Swansea Bay
620,311Estimate of unique patientsOctober 2024Wales
150,349Estimate of unique patientsOctober 2024Betsi Cadwaladr
6,672Estimate of unique patientsOctober 2024Powys
66,099Estimate of unique patientsOctober 2024Hywel Dda
Showing 1 to 100 of 336 rows
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Next update expected:22 January 2026

Updates

18th December 2025

New month added

4th December 2025

New month added

23rd October 2025
26th September 2025
Dataset first published.

Main information

Designation
Management information
Data provider
NHS Trusts and Local Health Boards
Data source
No specific source from data provider

Overview

Summary of dataset and variables

This table provides estimated numbers of individual patients on Referral to Treatment (RTT) waiting lists in Wales by local health board.

Data collection or calculation

Estimates are based on management information provided by Welsh Local Health Boards. Management information are not assessed against the Code of Practice for statistics. Though the principles of the Code of Practice have been applied, these data are not subject to the level of quality assurance applied to accredited official statistics.

Statistical quality

Suspension of Betsi Cadwaladr health board data

Due to data quality concerns, referral to treatment (RTT) data for Betsi Cadwaladr University (BCU) health board have been temporarily suspended. These concerns include anomalies in reported waiting list sizes and inconsistencies with operational activity levels, which have raised questions about the reliability of the data submitted. This suspension will remain in place until an external investigation into the quality and governance of the data is completed. In the interim, RTT statistics will be published excluding BCU data. Figures have been updated to September 2025 for the six health boards, but BCU and Wales data have not. Data up to August 2025 have been retained for BCU and Wales and will remain pending the outcome of the review.

The chief statistician has published a blog describing the current situation with BCU data and the actions being undertaken to address the issues.

Guidance on interpreting Wales and BCU data

Although we recognise some recent months may be affected by the BCU data quality issues, we have retained the BCU and Wales data to August 2025. Some revisions may be made to the historic BCU data following the review, however these are not expected to be substantial. Some caution should be exercised when using the recent BCU data, and by extension, the Wales totals. When using Wales-level data, note that recent monthly figures may be revised in future, so avoid drawing firm conclusions from short-term fluctuations. For small groups, such as patients waiting two years, figures may change more noticeably because of their size. Any revisions will have a greater impact on BCU than Wales overall, but long-term patterns for both should be broadly reliable.

The methods used by the health boards to estimate numbers of individual patients on RTT waiting lists are different, reflecting the different underlying administrative systems in use. In some cases, health boards have confirmed that their methods enable all patients to be counted, and with no duplication, meaning the figures are expected to be very accurate. In other cases, it is known that some patients are not included in the count - for example because they are not recorded on the same systems as other patients - or that there is a possibility of some duplication. The most significant example of this is in Hywel Dda University health board, where it is not possible to include patients waiting for diagnostic services or therapies. These patients account for around 10% of the total RTT pathways provided by Hywel Dda. Other examples of over and under-coverage are expected to have a very small impact on the figures.

Betsi Cadwaladr University (BCU) local health board implemented an improved method for estimating unique patients which was applied to data from April 2023. This means figures for BCU before and after April 2023 are not directly comparable. The new method had the impact of reducing the estimates for BCU by around 4,000 compared with the previous method. This was around 3% of the BCU figure. The impact on Wales level figures was small, causing a reduction of less than 1% compared with the previous methodology.

Related reports

Published by

Organisation
Welsh Government
Contact email
stats.healthinfo@gov.wales

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