“…(1981) laid down their unsupported criteria for allowing a trial of scar, their first being that the patient should have only one scar, Flamm et al . (1984) felt that more than one previous caesarean section was a contraindication to a trial of labour but produced no supporting evidence, Bider et al . (1990) stated that: ‘We do not allow patients with two previous caesarean sections to deliver vaginally’, but had to admit that this policy was quite arbitrary.…”