Clinical Trails Datasets in UK

A colleague of mine is interested in looking at the clinical trials in UK. I understand that there are a number of data search portal available.

http://www.nhs.uk/Conditions/Clinical-trials/Pages/clinical-trial.aspx

https://www.clinicaltrialsregister.eu/ctr-search/search

http://apps.who.int/trialsearch/Default.aspx

Do you happen to know whether this kind of clinical trial datasets are publicly available for download, ideally in RDF?

Best regards,

-Guoqian