Looks like the crash happened on July 21st, 1996. The investigation concluded that there was a temporary loss of power in the left engine (for causes undetermined) which resulted in the aircraft stalling and a resultant spin. It appeared that the pilot had regained control of the aircraft before the crash, but was at too low an altitude to recover from the resulting dive.
UK accident investigation report - http://www.aaib.gov.uk/cms_resources/dft_avsafety_pdf_501355.pdf
Mike