AiO Pro PAT Testing provides on-site portable appliance testing for businesses and organisations across Berkshire, including Reading, Bracknell, Wokingham, Maidenhead, Windsor, Slough and Newbury.
Our Christchurch-based team covers the South and South West. We plan visits around your appliance quantities, site access and working hours, with clear digital results after testing.
For one premises or several Berkshire sites, get your PAT testing quote or call 0118 336 0112.

For a premises in Reading, see our dedicated Reading PAT testing page. This county page helps you arrange work elsewhere in Berkshire or coordinate several addresses.
We support workplaces in Bracknell, Wokingham, Maidenhead, Windsor, Slough, Newbury and surrounding Berkshire areas. Send the address list so we can confirm scheduling and a tailored quote where appropriate.
Sites inside the M25 require a confirmed attendance supplement; central London needs a tailored quotation. We assess the actual site location when quoting.
Receive itemised digital results with appliance descriptions, locations, identification numbers and recorded outcomes, together with certification. Tell us about any asset-reference requirements before booking.
Learn how our PAT testing service works or check what counts as an appliance before using the calculator below.
A few quick details. A clear estimate. Then we’ll help you arrange the rest.
Count each separate electrical test item, including detachable mains leads, external power supplies and powered bases.
See the illustrated counting guide (opens in a new tab)
Unsure of your total? Speak to AiO and we’ll help you count.
No commitment to book. We’ll confirm your requirements first.
1–49 standard appliances: £85 fixed package. From 50: £40 attendance plus £0.95 for every appliance. Microwave leakage testing is £4.50 additional per microwave. Include each microwave in your total appliance count.
London attendance supplements, industrial/commando testing and remedial work are additional. Specialist testing charges also apply within the £85 package. Central London requires a tailored quote.
Larger site or multiple locations?
Email us for a tailored quote with your appliance list or previous report, site postcode(s) and preferred dates.
| Number of appliances | Standard testing price |
|---|---|
| 1–49 | £85 fixed package |
| 50 or more | £40 attendance + £0.95 per appliance |
All prices exclude VAT. Microwave leakage testing is an additional £4.50 per microwave, on top of appliance testing. Industrial/commando appliances (110V, 16A or 32A) incur an additional testing charge, including within the £85 package; please request a quote. Sites inside the M25 require a confirmed attendance supplement; central London requires a tailored quote.
Larger site or multiple locations? Email us for a tailored quote with your appliance count, site postcode(s), equipment types and preferred testing dates.
* Your invoice is based on the number of appliances actually tested or inspected. Standard testing is £85 for 1–49 appliances, or £40 attendance plus £0.95 for every appliance when 50 or more are tested. Microwave leakage tests, industrial/commando testing and agreed London attendance supplements are additional. All prices exclude VAT. Larger sites and multi-site work can be quoted individually before booking.
** While performing testing our engineers will perform minor remedials to failed equipment if possible to ensure any disruptions to the business are minimised. Any minor appliance rewires and replacement of damaged plugs will be rectified and applied to the invoice. Any more extensive repairable issues will be reported to the responsible persons of the business and repair price agreed before a repair takes place. If an appliance is unrepairable on site it will be taken out of service.