All In One Pro PAT Testing (AIO) provides subcontract PAT Testing, In‑service appliance testing and Appliance testing for organisations delivering contracts and tenders across the South of England.
We specialise in delivering exactly what your contract specification asks for:
For organisations that already have contracts or tenders that include PAT Testing / Portable Appliance Testing / In‑service appliance testing, and need a reliable subcontractor to deliver that scope.
Send us your PAT Testing specification:
Share the relevant section of your contract or tender that covers Portable Appliance Testing.
We map our service to your scope:
We confirm exactly how we will meet each requirement and provide a clear proposal and rate card.
Set up and mobilisation:
We agree on sites, schedules, access arrangements, reporting formats and any system uploads (e.g. to Access Maintain or your CAFM).
Testing and reporting:
Our engineers carry out PAT Testing, label appliances, and provide certificates and records in the agreed format.
Ongoing support:
For ongoing contracts, we plan future test cycles, manage retests and keep records current.

We align our service directly with the kind of scope you see in formal contract documents.
If your contract document specifies a scope similar to this, we can deliver it and provide evidence of delivery.
Send us your PAT Testing specification for a like‑for‑like proposal.
White‑label or co‑branded service
Aligned to your contract documents
Flexible pricing
Clear evidence and documentation
Many tender specifications now include detailed requirements for Portable Appliance Testing / PAT Testing / In‑service appliance testing.
This gives evaluators a clear, credible delivery route for PAT Testing.
To get in touch:
Phone: 0800 211 8188
Email: info@allinonepropat.co.uk
Q. Can you work exactly to the PAT Testing scope in our contract?
Yes. We encourage you to send us the Portable Appliance Testing section of your contract or tender. We will map our service against each requirement and confirm how we meet it.
Q. Are you compliant with UK regulations and guidance?
Yes. Our PAT Testing is carried out by competent engineers using calibrated equipment, in line with:
Q. Can you upload certificates to our maintenance platform?
Yes. We can provide certificates and records in your required format and upload them to your chosen system (e.g. Access Maintain or other CAFM/asset management platforms), subject to access and permissions.
Q. Do you provide remedial works as part of PAT Testing?
We can carry out minor remedial works, such as replacing plugs and fuses, by agreement. More extensive repairs or replacements can be handled according to your contract arrangements.
Q. Can you handle multi‑site estates and tight deadlines?
Yes. We regularly deliver PAT Testing across multiple sites with defined timeframes. Once we’ve seen your scope and estate list, we’ll confirm realistic timescales and capacity.
Q. Can you be named as our PAT Testing subcontractor in tender responses?
Yes. We often work with clients who name us as their PAT Testing delivery partner in their tender responses, providing evaluators with confidence that the scope can be met.