I've found the booklet with the figures - they are for St George's in SW London.
2003: 85 booked for homebirth, 4 transferred antenally, 2 during labour, 3 after delivery.
2002: 77 booked, none transferred.
2001: 60 booked, 6 transferred antenally, 4 during labour, none after delivery.
2000: 85 booked, 10 transferred antenally, 11 during labour, 1 after delivery.
Reasons for tranfer before labour: bleeding, placenta praevia, high blood pressure, growth of baby, prolonged rupture of membranes, overdue baby, abnormal heart rate, IVF, premature labour before 37 weeks, breech presentation.
Reasons for transfer in labour: lack of pregress in labour, high blood pressure, abnormal fetal heart rate, meconium stained liquor, maternal request for epidural, prolonged rupture of membranes.
Reasons for transfer after delivery: incomplete placenta, post-partum haemorrhage, undiagnosed breech.
No figures on how many of the transfers were first babies.