Contacts At Critical Power Supplies

At Critical Power Supplies we are available 24-7 to help you solve your power and energy management problems. Please use any of the following methods to contac us or use our enquiry form and we will respond same working day.

Office Hours

Our HQ office and telesales opening hours are:
9:00am to 9:00pm Monday to Friday.
9:00am to 5:30pm Saturday.
10:00am to 4:00pm Sunday.

We operate a call back service Public Holidays while service contract customers are provided with a out of hours contract number or can log a call via the Service Login Portal.

Our Southern Office HQ, sales, general office telephone and fax numbers are:

Tel: 0845 519 3638 (local rates apply)
Fax: 0845 519 3639 (local rates apply)
International: +44(0)1844 358281

Our Northern sales office telephone number:

Tel: 0845 519 3611 (local rates apply)

Skype: critical_power_supplies_ltd

Scan the following QR Code to capture our contact details in your smartphone.

If your visiting our premises scan the following QR Code to load our address into your Google Maps on your smartphone.

Each team has its own generic email address:

    Sales & Service.

  • Sales: sales[at]criticalpowersupplies.co.uk
  • Project Team: projects[at]criticalpowersupplies.co.uk
  • Service: service[at]criticalpowersupplies.co.uk
  • UK Order Processing: ordersuk[at]criticalpowersupplies.co.uk
  • International Order Processing: ordersww[at]criticalpowersupplies.co.uk
  • HQ Functions.

  • Finance: finance[at]criticalpowersupplies.co.uk
  • HR: hr[at]criticalpowersupplies.co.uk
  • Marketing: marketing[at]criticalpowersupplies.co.uk
  • Operations: operations[at]criticalpowersupplies.co.uk
  • Quality: quality[at]criticalpowersupplies.co.uk
  • Recruitment: recruitment[at]criticalpowersupplies.co.uk

Please note [at] represents @ – we do not publish email addresses where possible to avoid spamming spiders.

Outside Working Hours Service

Clients with a 24-7 maintenance contract are provided with a 24-7 technical support and service alarm telephone number. These sites may also be remotely monitored by Critical Power Supplies using specialist monitoring software.

Please do not forget you can use your Service Portal and once logged in report faults, check status of tickets and request PM visits.

If you require assistance outside of our normal working hours and do not have a maintenance contract please call: 0845 519 3928 (local rates apply).

UK Office’s

Southern Office and administration
Critical Power Supplies Ltd, Sanderum Centre, 30A Upper High Street, Thame, Oxon OX9 3EX

Northern Office
Critical Power Supplies Ltd, 5 Holy Court, Doncaster, South Yorkshire, DN11 8NJ




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