[car] @garcialo @michiel, I think you might be looking for EU Mandate M/376? Here's a link:
http://www.cencenelec.eu/standards/Sectors/Accessibility/Pages/default.aspx
If you expand "European legislation and mandates", you can find the M/376 pdf. (Wow, it was published in 2005).
If you click on "Public Procurement" on the Accessibility page, you can read a bit more, and click on "ICT products and services – Mandate M/376" for a bit more.
Then you can summarize what you've learned and report back here... ;)