Police have named the two men who died when the light aircraft they were travelling in came down in a field near the M1 at the weekend.
70-year-old John Gill, from Belper in Derbyshire, and Robert Alan Eaves, 76, of Selston in Nottinghamshire, both died at the scene.
The aircraft came down near to junction 26 of the motorway at around 1:30pm on Saturday.
Post mortem tests have ruled out any medical condition contributing to the crash.
The Air Accidents Investigation Branch is continuing its inquiries into the crash.