David Pugh, 54, a specialist in autism, tried to pacify parents after concerns were raised about immunisation at the clinic near Borehamwood in Hertfordshire, St Albans Crown Court was told. Pugh, of Hoddesdon, Herts, denies eight counts of forgery. The clinic, the Elstree Aeromedical Centre, offered single immunisation jabs to parents worried by reports that the three-inone MMR jab could be linked to autism.