 In 1993 Aylmer was honoured with a festschrift edited by his long-time colleagues John Morrill and Paul Slack and his former doctoral student Daniel Woolf.Aylmer was on the Editorial Board of the History of Parliament Trust from 1968 to 1998, and chaired the board from 1989 to 1997.A Commissioner for Historical Manuscripts from 1978, he chaired the Commission from 1989 to 1989.