The procurement contact named on the official notice.

Applicants are asked to note that this procurement process will be conduced electronically with all documents and communication being managed through the Northumbrian Water eSourcing Spend Management portal called 'Ariba' (https://s1.ariba.com). Expressions of interest from this notice must be sent to the e-mail address brooke.hill@nwl.co.uk before the deadline date of the 7th April 2026 at 12:00hrs. Once expression of interest has been received that contains the details below, applicants will be given access to the Ariba portal within 48 hours from request. This portal will contain all the tender documents associated with this procurement that are available at the time. An email link will also be provided to the email address you provide to access the portal. When sending expression of interest, applicants must provide the following information: 1) Full company name 2) Main contact details of the person who will be given access to the Ariba portal - Name, job title, E mail address and telephone number. (The deadline for return of the completed PQQ/Conditions of Participation is the 14th April 2026 at 12noon).

The submission route named on the official notice.

Lot 1 - Domestic Heating, Fuel & Fire Safety Compliance The Contractor appointed under Lot 1 shall provide the following services: Annual Servicing & Certification 1.

LPG / Gas Central Heating Systems • Annual servicing and safety inspection • Combustion analysis and operational testing • Issue of Gas Safety Record / CP12 certificate 2.

Oil‑Fired Central Heating Systems • Annual service and safety inspection • Burner, controls and flue inspection • Visual inspection of oil storage tanks and supply lines • Issue of annual safety certificate 3.

Multi‑Fuel Stoves & Solid Fuel Appliances • Annual service of appliance • Cleaning of combustion chamber • Flue and chimney sweeping • Smoke evacuation and draw testing • Carbon monoxide alarm testing • Issue of annual safety certificate 4.

Fireplaces, Flues and Stoves • Inspection and testing for compliance • Certification of flues and liners where applicable B.

New Installations & Replacement Works 5.

Installation of new or replacement: • LPG / Gas central heating systems • Oil‑fired central heating systems • Multi‑fuel stoves and solid fuel appliances • Fireplaces, flues and chimney liners All installations must be fully commissioned, tested, and certified in accordance with current regulations.

C.

Reactive & Emergency Works 6.

Emergency attendance and repairs including: • System failures • Suspected unsafe appliances • Loss of heating or hot water • Carbon monoxide incidents Lot 2 - Electrical Compliance The Contractor appointed under Lot 2 shall provide the following services: A.

Electrical Safety • Electrical Installation Condition Reports (EICRs) • Periodic inspection and testing of domestic electrical installations • Reporting in line with BS 7671 • Identification of C1, C2 and FI observations • Remedial Electrical Works • Carrying out corrective works arising from EICRs • Certification following completion (EIC / Minor Works Certificate • Additional Electrical Compliance Checks (where applicable): • Consumer unit inspections • Earthing and bonding verification • Testing of fixed electrical equipment As above, for reactive works a 24/7/365 service is required.