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

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Data valuesData descriptionDateLocal health board
547,663Estimate of unique patientsMarch 2022Wales
127,344Estimate of unique patientsMarch 2022Betsi Cadwaladr
5,700Estimate of unique patientsMarch 2022Powys
62,250Estimate of unique patientsMarch 2022Hywel Dda
96,604Estimate of unique patientsMarch 2022Aneurin Bevan
94,904Estimate of unique patientsMarch 2022Cardiff & Vale
84,107Estimate of unique patientsMarch 2022Cwm Taf Morgannwg
76,754Estimate of unique patientsMarch 2022Swansea Bay
575,541Estimate of unique patientsJune 2022Wales
137,424Estimate of unique patientsJune 2022Betsi Cadwaladr
6,089Estimate of unique patientsJune 2022Powys
66,810Estimate of unique patientsJune 2022Hywel Dda
99,949Estimate of unique patientsJune 2022Aneurin Bevan
100,956Estimate of unique patientsJune 2022Cardiff & Vale
84,367Estimate of unique patientsJune 2022Cwm Taf Morgannwg
79,946Estimate of unique patientsJune 2022Swansea Bay
585,061Estimate of unique patientsJuly 2022Wales
140,472Estimate of unique patientsJuly 2022Betsi Cadwaladr
6,357Estimate of unique patientsJuly 2022Powys
68,207Estimate of unique patientsJuly 2022Hywel Dda
101,521Estimate of unique patientsJuly 2022Aneurin Bevan
102,770Estimate of unique patientsJuly 2022Cardiff & Vale
85,393Estimate of unique patientsJuly 2022Cwm Taf Morgannwg
80,341Estimate of unique patientsJuly 2022Swansea Bay
588,553Estimate of unique patientsAugust 2022Wales
140,645Estimate of unique patientsAugust 2022Betsi Cadwaladr
6,474Estimate of unique patientsAugust 2022Powys
68,935Estimate of unique patientsAugust 2022Hywel Dda
102,383Estimate of unique patientsAugust 2022Aneurin Bevan
102,839Estimate of unique patientsAugust 2022Cardiff & Vale
86,936Estimate of unique patientsAugust 2022Cwm Taf Morgannwg
80,341Estimate of unique patientsAugust 2022Swansea Bay
590,663Estimate of unique patientsSeptember 2022Wales
141,442Estimate of unique patientsSeptember 2022Betsi Cadwaladr
6,701Estimate of unique patientsSeptember 2022Powys
69,286Estimate of unique patientsSeptember 2022Hywel Dda
103,620Estimate of unique patientsSeptember 2022Aneurin Bevan
101,958Estimate of unique patientsSeptember 2022Cardiff & Vale
87,740Estimate of unique patientsSeptember 2022Cwm Taf Morgannwg
79,916Estimate of unique patientsSeptember 2022Swansea Bay
589,083Estimate of unique patientsOctober 2022Wales
141,183Estimate of unique patientsOctober 2022Betsi Cadwaladr
6,848Estimate of unique patientsOctober 2022Powys
69,584Estimate of unique patientsOctober 2022Hywel Dda
103,106Estimate of unique patientsOctober 2022Aneurin Bevan
100,962Estimate of unique patientsOctober 2022Cardiff & Vale
87,800Estimate of unique patientsOctober 2022Cwm Taf Morgannwg
79,600Estimate of unique patientsOctober 2022Swansea Bay
586,002Estimate of unique patientsNovember 2022Wales
141,121Estimate of unique patientsNovember 2022Betsi Cadwaladr
6,838Estimate of unique patientsNovember 2022Powys
69,510Estimate of unique patientsNovember 2022Hywel Dda
102,981Estimate of unique patientsNovember 2022Aneurin Bevan
100,478Estimate of unique patientsNovember 2022Cardiff & Vale
87,114Estimate of unique patientsNovember 2022Cwm Taf Morgannwg
77,960Estimate of unique patientsNovember 2022Swansea Bay
4,639,999Estimate of unique patients2022Wales
577,433Estimate of unique patientsDecember 2022Wales
1,109,035Estimate of unique patients2022Betsi Cadwaladr
139,404Estimate of unique patientsDecember 2022Betsi Cadwaladr
51,701Estimate of unique patients2022Powys
6,694Estimate of unique patientsDecember 2022Powys
68,157Estimate of unique patientsDecember 2022Hywel Dda
542,739Estimate of unique patients2022Hywel Dda
811,902Estimate of unique patients2022Aneurin Bevan
101,738Estimate of unique patientsDecember 2022Aneurin Bevan
98,403Estimate of unique patientsDecember 2022Cardiff & Vale
803,270Estimate of unique patients2022Cardiff & Vale
86,180Estimate of unique patientsDecember 2022Cwm Taf Morgannwg
689,637Estimate of unique patients2022Cwm Taf Morgannwg
76,857Estimate of unique patientsDecember 2022Swansea Bay
631,715Estimate of unique patients2022Swansea Bay
575,611Estimate of unique patientsJanuary 2023Wales
140,283Estimate of unique patientsJanuary 2023Betsi Cadwaladr
6,355Estimate of unique patientsJanuary 2023Powys
67,781Estimate of unique patientsJanuary 2023Hywel Dda
101,421Estimate of unique patientsJanuary 2023Aneurin Bevan
98,276Estimate of unique patientsJanuary 2023Cardiff & Vale
85,799Estimate of unique patientsJanuary 2023Cwm Taf Morgannwg
75,696Estimate of unique patientsJanuary 2023Swansea Bay
573,917Estimate of unique patientsFebruary 2023Wales
138,324Estimate of unique patientsFebruary 2023Betsi Cadwaladr
6,576Estimate of unique patientsFebruary 2023Powys
67,663Estimate of unique patientsFebruary 2023Hywel Dda
101,571Estimate of unique patientsFebruary 2023Aneurin Bevan
98,902Estimate of unique patientsFebruary 2023Cardiff & Vale
85,971Estimate of unique patientsFebruary 2023Cwm Taf Morgannwg
74,910Estimate of unique patientsFebruary 2023Swansea Bay
575,994Estimate of unique patientsMarch 2023Wales
139,354Estimate of unique patientsMarch 2023Betsi Cadwaladr
7,072Estimate of unique patientsMarch 2023Powys
68,016Estimate of unique patientsMarch 2023Hywel Dda
102,444Estimate of unique patientsMarch 2023Aneurin Bevan
98,865Estimate of unique patientsMarch 2023Cardiff & Vale
85,232Estimate of unique patientsMarch 2023Cwm Taf Morgannwg
75,011Estimate of unique patientsMarch 2023Swansea Bay
577,882Estimate of unique patientsApril 2023Wales
135,254 [b]Estimate of unique patientsApril 2023Betsi Cadwaladr
7,410Estimate of unique patientsApril 2023Powys
68,429Estimate of unique patientsApril 2023Hywel Dda
Showing 1 to 100 of 344 rows
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Main information

Most recent update
26 September 2025
Next update expected
23 October 2025
Designation
Management information
Data provider
NHS Trusts and Local Health Boards
Data source
No specific source from data provider
Time period covered
January 2022 to December 2025

Data notes

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

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.

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

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