Payment by Invoice

The following organisations are entitled to pay by invoice providing we receive a signed purchase order.

  • Local and National Government
  • Police
  • NHS Trusts
  • Ministry of Defence

To avoid delays your purchase order should include the following information:

  • Purchase Order Number
  • Invoice and Delivery address
  • Accounts contact name and telephone number
  • Delivery contact name and telephone number
  • Email address (if available)
  • Additional delivery and order information you feel maybe useful

Please fax your Purchase Order to 01442 500122 or email to:

You can of course order as normal online by credit card. If you have a procurement/purchasing card remember to choose "Visa Purchasing" as your card type in the payments screen.

Alternatively you may post your Purchase Order to:

High Security Locking Limited
Unit 1b
50 Aylesbury Road
Aston Clinton
HP22 5AH