Customer service Billing:

Monday — Friday:
9:00 - 18:00 CET time

Technical Support:

Monday — Friday:
9:00 - 18:00 CET time

Ordering system/certificate issuance:

24/7

LeaderTelecom B.V. is VAT-registered with the UK’s HM Revenue and Customs (HMRC) and has a UK VAT number (GB373878249) , so we can charge UK VAT as normal. All invoices for UK customers now include 20% VAT, although still denominated in EUR as the company’s tax residency is the Netherlands.

Certum Document Signing in the Cloud


The Certum Document Signing Certificate is a high-tech digital signature that verifies the identity of a person or organization. It allows secure and automatic document signing, making it much faster to share documents both inside a company and with its business partners. It works with Adobe, Microsoft Office, and LibreOffice files. The certificate follows top security rules and is recognized by Adobe's trusted list (AATL). This means you can use it to safely sign Adobe documents with a trusted digital signature.


As low as £33.06 / year *

* — with the purchase on 3 years.

All prices excl. VAT


Order Now
  • from anywhere in the world
  • without a physical card
  • supports Adobe, Office and Libra Office file formats

How it works?

Problem:

You want to prevent unwanted changes to a PDF document and save your authorship.

Solution:

Use the certificate for PDF signing from a trusted certification authority on list of Adobe trusted suppliers.

Result:

Trusted PDF with your customised digital signature and preservation of your authorship.

Cheap!
Certum Document Signing in the Cloud

Issuance from 1 day

Required organization/person verification

Degree of trust:
Organization Validation

For individuals and organizations


  • Issued after the organization/person verification
  • Data contained in the certificate: Name and Surname/Name and Surname and Company Data
  • Compliant with the X.509 v.3 (RFC5280) standard

Price:

  • 1 year – £64.70
    excl. VAT
    Buy
  • 2 years – £81.95
    excl. VAT
    Buy
  • 3 years – £99.20
    excl. VAT
    Buy

Platform support



Sign PDF, that will be trusted
in Adobe Acrobat or Reader
Sign LibreOffice
Documents
Sign MS Office
Documents

Support

We provide clients with quick, friendly and professional support via email and phone

Chat with us!