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

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Data valuesData descriptionDateLocal health board
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
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
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
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
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
4,287,018Estimate of unique patients2025Wales
1,061,735Estimate of unique patients2025Betsi Cadwaladr
49,996Estimate of unique patients2025Powys
455,389Estimate of unique patients2025Hywel Dda
764,128Estimate of unique patients2025Aneurin Bevan
820,261Estimate of unique patients2025Cardiff & Vale
589,439Estimate of unique patients2025Cwm Taf Morgannwg
546,070Estimate of unique patients2025Swansea Bay
Showing 301 to 344 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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