Disused Mine and Quarry Tips (Wales) Act 2025

A Welsh Government Bill, introduced by Huw Irranca-Davies MS, Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs. The Business Committee has remitted the Bill to the Climate Change, Environment, and Infrastructure Committee.

About the Bill

The aim of the Bill is to reduce the likelihood of landslides on disused coal and non-coal tips through the establishment of a new public body which will have functions in relation to the assessment, registration, monitoring and management of disused tips.

The key purposes of the Bill are:

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>>>to establish the Disused Tips Authority for Wales (“the Authority”) as a body corporate. Its main objective in carrying out its functions under the Bill is to ensure that disused tips do not threaten human welfare by reason of their instability;

>>>to make provision for the assessment, registration and monitoring of disused tips;

>>>to contain provisions that enable the Authority to deal with tip instability and threats to tip instability. This includes powers to require an owner of land to carry out operations and for the Authority to carry out operations itself, and related provisions in respect of payments in connection with such operations;

>>>to contain supplementary provisions including powers of entry for the Authority, information sharing provisions and powers to require Information; and

>>>to create related offences to support the enforcement of the regime.

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Further details about the Bill (PDF 423KB) can be found in its accompanying Explanatory Memorandum (PDF 1.4MB).

Current Stage

BillStageAct

The Disused Mine and Quarry Tips (Wales) Act became law in Wales on 11 September 2025. An explanation of the various stages of Senedd Bills is available in the Guide to the Stages of Public Bills and Acts.

Record of Passage in the Welsh Parliament

The following table sets out the dates for each stage of the Bill’s passage through the Senedd.

¬¬¬Publication of the Act

The Disused Mine and Quarry Tips (Wales) Act 2025 has been published and can be accessed through the Welsh Government’s Law Wales website. The relevant Law Wales web page will also provide updated information on the Act, including any revised Explanatory Memorandum prepared by the Welsh Government following Royal Assent, together with details of any subordinate legislation made under the Act.

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¬¬¬Date of Royal Assent (11 September 2025)

Royal Assent was given on 11 September 2025.

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¬¬¬Stage 4, vote by the Senedd to pass the final text of the Bill (15 July 2025)

Stage 4 proceedings of the Disused Mine and Quarry Tips (Wales) Bill took place in Plenary on Tuesday 15 July 2025.

Disused Mine and Quarry Tips (Wales) Bill, as passed (PDF 472KB)

Presiding Officer’s statement in accordance with Section 111A(3) of the Government of Wales Act 2006 (PDF 155KB)

Letter from the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs to the Llywydd in relation to the Disused Mine and Quarry Tips (Wales) Bill – Minister of the Crown consent - 11 July 2025 (PDF 152KB)

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¬¬¬Stage 3, Plenary consideration of amendments (8 July 2025)

Following the completion of Stage 2 proceedings, Stage 3 commenced on 5 June 2025. The Senedd agreed on 1 July 2025, under Standing Order 26.36, that the order of consideration for Stage 3 proceedings would be:

Section 1; Schedule 1; Sections 2-49; Schedule 2; Section 50; Schedule 3; Sections 51-90; Long Title.

Stage 3 proceedings took place in Plenary on Tuesday 8 July 2025.

Notice of Amendments - 6 June 2025 (PDF 86KB)

Notice of Amendments - 26 June 2025 (PDF 153KB)

Welsh Government: Purpose and effect table - 27 June 2025 (PDF 236KB)

Notice of Amendments - 30 June 2025 (PDF 155KB)

Notice of Amendments - 1 July 2025 (PDF 84KB)

Revised Explanatory Memorandum and Regulatory Impact Assessment – 1 July 2025 (PDF 1.9MB)

Marshalled List of Amendments - 2 July 2025 (PDF 224KB)

Grouping of Amendments – 3 July 2025 (PDF 95KB)

Disused Mine and Quarry Tips (Wales) Bill, as amended at Stage 3 (PDF 479KB) (Amendments to the Bill since the previous version are indicated by sidelining in the left margin.)

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¬¬¬Stage 2, Committee consideration of amendments (30 April 2025 – 4 June 2025)

Stage 2 began on 30 April 2025. The deadline for tabling amendments is five working days before the date of the meeting at which they are due to be considered.

The Climate Change, Environment, and Infrastructure Committee agreed on 7 May 2025, under Standing Order 26.21, that the order of consideration for Stage 2 proceedings would be:

Section 1; Schedule 1; Sections 2-48; Schedule 2; Section 49; Schedule 3; Sections 50-88; Long Title.

Stage 2 consideration took place in Committee on 4 June 2025.

Notice of Amendments - 1 May 2025 (PDF 80KB)

Notice of Amendments - 8 May 2025 (PDF 105KB)

Notice of Amendments - 16 May 2025 (PDF 140KB)

Welsh Government: Purpose and effect table - 19 May 2025 (PDF 164KB)

Notice of Amendments - 20 May 2025 (PDF 166KB)

Notice of Amendments - 22 May 2025 (PDF 155KB)

Notice of Amendments - 28 May 2025 (PDF 80KB)

Marshalled List of Amendments - 28 May 2025 (PDF 312KB)

Grouping of Amendments - 29 May 2025 (PDF 99KB)

Disused Mine and Quarry Tips (Wales) Bill, as amended at Stage 2 (PDF 440KB) (Amendments to the Bill since the previous version are indicated by sidelining in the left margin.)

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¬¬¬Financial resolution

In accordance with Standing Order 26.68 the Presiding Officer indicated that a financial resolution was required for this Bill. Further information about financial resolutions is available in section 3 of the Guide to the scrutiny stages for Public Bills.

A Financial Resolution in relation to the Disused Mine and Quarry Tips (Wales) Bill was agreed in Plenary on 29 April 2025.

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¬¬¬Stage 1, Committee consideration of the general principles (9 December 2024 – 29 April 2025)

A debate took place in Plenary on 29 April 2025. The motion to agree the general principles of the Bill was agreed.

The Climate Change, Environment and Infrastructure Committee considered its approach to Stage 1 consideration on 27 November 2024.

The Climate Change, Environment, and Infrastructure Committee laid its report on 4 April 2025. The Welsh Government responded (PDF 336KB) to the report on 24 April 2025.

Stage 1 Correspondence

- Follow up letter from the Chair to the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs in relation to the Disused Mine and Quarry Tips (Wales) Bill 18 December 2024 (PDF 118 KB)

- Response from the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs to the Chair in relation to the Disused Mine and Quarry Tips (Wales) Bill 22 January 2025 (PDF 441 KB)

- Letter from the Chair to the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs in relation to the Stage 1 scrutiny of The Disused Mine and Quarry Tip (Wales) Bill 3 February 2025 (141 KB)

- Letter from the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs to the Chair in relation to the Disused Mine and Quarry Tips (Wales) Bill – summary guidance 6 February 2025 (PDF 681KB)

- Response from the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs in relation to the Disused Mine and Quarry Tips (Wales) Bill 17 February 2025 (241 KB)

- Letter from the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs to the Chair in relation to the Disused Mine and Quarry Tips (Wales) Bill - Minister of the Crown consent - 28 February 2025 (PDF 155KB)

- Response from the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs to the Chair in relation to the Committee's report: Disused Mine and Quarry Tips (Wales) Bill: Stage 1 report - 24 April 2025 (PDF 336 KB)

Committee dates

The Climate Change, Environment and Infrastructure Committee will consider the Bill on the following dates:

Date and Agenda	Purpose of meeting	Transcript	Senedd.TV
27 November 2024	Consideration of approach to Stage 1 scrutiny	Private	Private
12 December 2024	Evidence session with the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs	Transcript	View meeting
30 January 2025	Evidence sessions	Transcript	View meeting
5 February 2025	Evidence sessions	Transcript	View meeting
6 March 2025	Evidence session with the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs	Transcript	View meeting

The Legislation, Justice and Constitution Committee considered the Bill on the following dates:

Date and Agenda	Purpose of meeting	Transcript	Senedd.TV
10 February 2025	Evidence session with the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affairs	Transcript	View meeting

The Legislation, Justice and Constitution Committee wrote to the Business Committee on 28 March 2025 requesting an extension to the reporting deadline from 4 April to 9 April 2025.

The Legislation, Justice and Constitution Committee laid its report on 8 April 2025 (PDF 2898KB). The Welsh Government responded (PDF 264KB) to the report on 24 April 2025.

The Finance Committee considered the Bill on the following dates:

Date and Agenda

Purpose of meeting

Transcript

Senedd.TV

20 February 2025

Evidence session with the Deputy First Minister and Cabinet Secretary for Climate Change and Rural Affair

Transcript

View meeting

The Finance Committee laid its report (PDF 317KB) on 4 April 2025. The Welsh Government responded to the report on 25 April 2025.

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¬¬¬Bill introduced (9 December 2024)