At present we do not provide this facility. Our main access point is via the API and we have over 200 users and applications that are dependent on the availability of this service. Thus, to protect the platform from downtime caused by large or inefficient queries or attack by malicious software we do not open the SPARQL interface onto our main system.
We would like to offer SPARQL access to the platform in the future and are looking at how we can fund this facility in the future via the Open PHACTS Foundation. In the meantime we do offer exports and downloads of our code and data should you wish to investigate this yourself, please just let us know.