The UK has “a list”:http://www.berr.gov.uk/whatwedo/europeandtrade/strategic-export-control/licensing-policy/end-use-control/page29307.html, current as of February.
According to the site,
bq. The entities included on the list are mainly based on the last 3 years’ experience of either invoking the WMD end-use control or refusing licences under it. In addition there are a few other entities for which we have not refused licences or invoked the control, but there is publicly available information indicating their *involvement in WMD programmes of concern.*
One footnote jumped out at me because it states that some of the listed entities “are included solely because they are listed in UN Security Council Resolutions 1737, 1747 or 1803 concerning Iran.”
Not sure if this suggests that UK intel doesn’t have anything on those entities, but I thought it worth noting.