All In One Pro PAT Testing
All In One Pro PAT Testing
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Multi-site PAT testing without the chaos: a practical delivery and reporting playbook for FM and estates teams

PAT Testing 13a Plug

If you manage multiple locations (or deliver FM services across a client’s estate), PAT testing becomes less about “doing tests” and more about repeatable delivery: the same standard, the same reporting fields, and the same exception process at every site.

This article shares a practical playbook you can use to run a clean multi-site programme — and it’s also exactly what we build into our subcontract delivery approach: Subcontract PAT testing.

Quick answer

  • Multi-site PAT projects fail due to inconsistent asset data, poor site access planning, and a lack of exception workflow.
  • Fix this by agreeing on a standard asset register format, running site readiness checks, and treating failures/re-tests as a tracked workflow (not an afterthought).
  • Use a rolling programme with clear governance: who approves access, who receives reports, and who authorises remedials.

The multi-site PAT “operating model”

A robust programme usually has five components:

  1. Site list + priority order (risk and operational constraints)
  2. Standardised asset register (single source of truth)
  3. Site readiness (access, inductions, constraints)
  4. Delivery waves (planned visits, minimal disruption)
  5. Exception workflow (fails, quarantines, re-tests, sign-off)

1) Standardise your reporting (before the first site visit)

Decide the reporting standard once, then apply it everywhere. The goal is for your client to audit the estate without reconciling across different formats.

FieldWhy it mattersTip
Unique Asset IDPrevents duplicates; enables re-test trackingUse a consistent ID prefix per client or per site
Site name + site codeEnsures correct aggregation across the estateMatch the client’s existing naming system
Location (area/room)Speeds up finding items and resolving failsKeep it practical: “Bar”, “Kitchen pass”, “Store 1”
Appliance descriptionHelps non-technical teams identify assetsUse consistent terms (“kettle”, “extension lead”, “POS screen”)
Make/model/serial (if available)Improves traceability and replacement controlNot all assets have serials; don’t block delivery
Class (I / II)Ensures correct test method and interpretationUseful for audit defensibility
Test date + resultCore compliance evidenceInclude pass/fail and a simple result code set
Fault / action requiredCreates a clear exception listSeparate “minor fix” from “remove from service”

2) Site readiness checklist (reduces wasted visits)

Site access and readiness cause the biggest delays. Use this checklist before you schedule:

AreaWhat to confirmOwner
ContactsNamed site contact + deputy, phone number, arrival instructionsClient / FM
AccessKeys, security, sign-in process, inductions, permitsClient / FM
Operating hoursQuiet windows, shift patterns, peak trading timesSite
High-risk zonesWhere portable items are stored, and how to access locked areasSite / H&S
Asset availabilityParking permits, loading bays, and time restrictionsSite
Parking/loadingParking permits, loading bays, time restrictionsSite

3) Deliver in “waves” (and avoid disrupting operations)

A reliable approach for estates is to group sites into waves by:

  • Risk (higher-risk first: kitchens, workshops, hospitality venues, care settings)
  • Operational constraints (out-of-hours where required)
  • Geography (reduce travel waste; keep costs predictable)

4) Exception workflow (the part that protects your SLA)

“Fails” and “cannot access” items will happen. The key is to treat exceptions as a managed workflow.

Exception typeImmediate actionNext stepClose-out evidence
Fail – unsafeLabel and remove/quarantine (per site process)Repair/replace authorised by clientRe-test result recorded against same Asset ID
Fail – minor issueRecord “no access” with the locationMinor remedial agreed and completed (where permitted)Updated register notes + re-test where applicable
Cannot access item/roomReschedule with the access ownerRe-test result recorded against the same Asset IDRevisit logged and completed test entry
Item not foundMark as “not located”Site to confirm if removed/disposed/relocatedRegister updated (removed or reallocated)

Where we fit

All In One Pro PAT Testing supports multi-site and subcontract delivery across Bournemouth and a wide surrounding radius (approximately two hours), including Poole, Christchurch, Southampton, Salisbury, Winchester, Dorchester, Weymouth, Yeovil, Blandford, Basingstoke and Portsmouth.

If you’re tendering and need delivery support, start here: https://allinonepropat.co.uk/subcontract-pat-testing/

Related sector guidance (useful for multi-site estates)

FAQs

What’s the most important standardisation step for multi-site PAT?

Agree on the asset register fields and naming conventions before delivery starts. Without that, you end up with reports that can’t be compared across sites.

How do we minimise disruption at customer-facing sites?

Plan by operational windows (before opening, after service, shift overlaps), and group areas logically (front-of-house first, then back-of-house).

How should we handle failed items on a framework?

Use a defined quarantine/removal process, an authorisation route for repair/replacement, and a re-test record against the same asset ID so the audit trail is clear.

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