As of April 2023, the software prices (exclusive of VAT) are:

Software New Purchase Upgrade Options
Taurus Base £6,000 None N/A
Taurus Advanced


£12,000


Taurus Base
(bought pre-Advanced release)
£6,000
Taurus Base
(bought post-Advanced release)
£6,000 + £850
IMBA-Lite £2,600 IMBA Professional Plus Add-On dependent

IMBA-Plus

£5,200

IMBA Professional Plus Add-On dependent
IMBA-Lite £2,600 + £1,000

IMBA-Pro

£7,800

IMBA Professional Plus Add-On dependent
IMBA-Lite £5,200 + £1,000
IMBA-Pro £2,600 + £1,000

Upgrades from IMBA Professional Plus to IMBA-Lite/-Plus/-Pro will be available until March 2025


The software licences are valid for a maximum of 5 users. If more than 5 users are required, then the licence cost is an extra 10% per additional user to the full purchase price. An administration fee (£850 for Taurus and £1,000 for IMBA) is applied if extra users are being added to a licence in a separate sale.


The US Nuclear Regulatory Commission has taken over the distribution of IMBA worldwide (excluding Europe) through their RAMP programme, under licence from UKHSA. For all sales outside Europe, please contact the new distributor at:

Radiation Protection Computer Code Analysis and Maintenance Program (RAMP)

Purchase procedure

  1. Please use the 'Contact us' button or send the Tau Team a message Taurus@ukhsa.gov.uk to initiate a purchase.
  2. Once we have received your information, we will ask for a completed order form to be sent to us (containing the customer organisation details and professional contact details, telephone, email, etc,) which specifies the software and number of licences required.
  3. Payment is required before distribution of the licences. Invoicing is done by a commercial invoice from a customer purchase order, or order form. New customers are required to complete additional paperwork to be added to the invoicing system.
  4. Once payment has been made, the software can be downloaded from our website in the 'your account' section.
  5. The licence file(s) will be encrypted and sent via email to the contact listed in the order form.

The 'Resources' page contains useful documents such as the:

  • Taurus/IMBA software information sheets
  • Taurus/IMBA software order forms
  • Taurus/IMBA end-user licence agreements
  • Taurus/IMBA privacy policies
  • Taurus version history
  • Taurus quality validation document

New Customers

New customers will be required to supply additional information to be added to our invoicing system. This includes VAT/tax country code and registration number (if UK registered) and a copy of the company headed paper is also required. Please inform the Tau Team that you are a new customer to be invoiced when initiating a purchase.

Once The Tau team has a completed order form and purchase order (and an invoice information form for new customers), the invoice will be sent and once paid the software can be downloaded from the 'Your account' section of the website. The Tau Team will send you the licence file that will activate the software for the number of users specified in the order form.


Third-party purchase

A purchase can be made via a third-party agent on behalf of the end user. In this circumstance, a contract specification must be signed by the agent accepting the Terms and Conditions for the Supply of Goods and/or Services. The invoice will be sent to a specified address, which, if new to our invoicing system must be added via the same process as a new customer.