There was late pre-Roman iron age reoccupation of the hillfort within the entrance area, after a period of abandonment:
Dixon, P.W. 1994 Crickley Hill: The Hill-Fort Defences University of Nottingham
And a burial of the same date was located on the north slope of the hill:
Staelen, Yvette J. E. 1983 ‘The Birdlip Cemetery’ in Transactions of the Bristol and Gloucester Archaeological Society, 1982 Vol 100, pp. 19-32