A quick search on the web came up with the following:
G-ACSS
'There the restoration to flying condition began culminating in the first flight of G-ACSS for 49 years in 1987. It flew until the closure of Hatfield airfield in 1993 but was kept in taxiable condition at Old Warden. The extension of the runway there lead to a complete overhaul of the aircraft and it will take to the air again in 2002.'
GINFO Search Results | Aircraft Register | Safety Regulation
'Total Hours: 549 at 31/12/1993
Permit to Fly Validity Expiry: 02/06/1994'
Landing accident 2002:
On 28 October 2002 G-ACSS was taken for a test flight for the purpose of obtaining a Permit to Fly. On landing the aircraft suffered severe damage to the right landing gear, minor damage to right engine, nacelle and wing-tip.
http://www.aaib.gov.uk/cms_resources...pdf_028728.pdf
Video of taxi run during 2008
YouTube - De Havilland DH.88 Comet taxi run
TJ