The insane explosion footage is at 5 mins in.

I hadn't heard about this case in the UK, this is a detailed Australian news report on the case, and the recent court findings (feb 2010).

SIEV-36 (Suspected Illegal Entry Vessel 36) was a boat from Indonesia carrying 47 apparently Afghan asylum seekers and two Indonesian crew members. The vessel exploded and sank near Ashmore Reef, Australia in the early morning of April 16, 2009, shortly after being intercepted by an Australian patrol boat HMAS Albany. In recent years, a number of such vessels have arrived clandestinely in Australian waters and are sequentially designated as SIEVs by Australian border protection authorities for operational purposes.