ABC Table
| O Crotaigh | Ffos Las 1.15 | Mon |
| O'Donovan Rossa | Navan 3.05 | Sun |
| Obe Brave | Wolverhampton 9.20 | Fri |
| Obe Gold | Lingfield 1.30 | Wed |
| Obe Gold | Kempton 4.30 | Thu |
| Obelix De Longechaux | Newbury 2.40 | Thu |
| Ocarina | Musselburgh 12.10 | Fri |
| Ocean Transit | Taunton 1.05 | Thu |
| Oceanos des Obeaux | Newbury 2.40 | Thu |
| Ocheekobee | Lingfield 2.10 | Tue |
| Ocheekobee | Chepstow 1.10 | Wed |
| Offshore Account | Aintree 1.45 | Sun |
| Offshore Account | Newbury 2.05 | Fri |
| Oh So Humbel | Navan 2.05 | Sun |
| Oilean Acla | Gowran Park 3.20 | Tue |
| Oiseau de Nuit | Newbury 3.15 | Fri |
| Old Benny | Newbury 2.40 | Thu |
| Old Benny | Newbury 2.05 | Fri |
| Old Brigade | Towcester 2.10 | Sun |
| Old Brigade | Ludlow 3.20 | Mon |
| Old Brigade | Uttoxeter 3.05 | Thu |
| Old Romney | Lingfield 3.45 | Wed |
| Old Shyan | Navan 3.05 | Sun |
| Old Si | Navan 2.35 | Sun |
| Olmeto Collonges | Chepstow 2.50 | Wed |
| Olympian | Newbury 3.15 | Thu |
| Olympian Boy | Kempton 12.50 | Mon |
| Olympian Boy | Taunton 1.40 | Thu |
| Olympic Ceremony | Wolverhampton 6.50 | Fri |
| On Borrowed Wings | Kempton 12.20 | Mon |
| On Borrowed Wings | Kempton 12.20 | Mon |
| One Back For Luck | Musselburgh 2.35 | Sun |
| One Back For Luck | Musselburgh 2.35 | Sun |
| One Cool Cookie | Aintree 12.35 | Sun |
| One Cool Cookie | Aintree 1.45 | Sun |
| One Cornetto | Towcester 3.20 | Sun |
| One Cornetto | Towcester 3.20 | Sun |
| One Cornetto | Lingfield 12.40 | Tue |
| One More Round | Lingfield 2.00 | Wed |
| One Way Or Another | Wolverhampton 8.50 | Fri |
| One of The Boys | Towcester 3.20 | Sun |
| One of The Boys | Ffos Las 3.30 | Mon |
| One of The Boys | Lingfield 12.40 | Tue |
| One of The Boys | Chepstow 3.25 | Wed |
| Oniz Tiptoes | Wetherby 12.50 | Wed |
| Oniz Tiptoes | Musselburgh 12.10 | Fri |
| Operachy | Taunton 1.05 | Thu |
| Operation Houdini | Navan 2.35 | Sun |
| Opus Cafe | Lingfield 2.40 | Tue |
| Opus Cafe | Sedgefield 3.20 | Tue |
| Opus Dei | Lingfield 1.55 | Fri |
| Or de Grugy | Musselburgh 3.10 | Sun |
| Or de Grugy | Musselburgh 3.10 | Sun |
| Oracle des Mottes | Kempton 3.10 | Mon |
| Oracle des Mottes | Kempton 3.10 | Mon |
| Orchard King | Ffos Las 3.00 | Mon |
| Orchard King | Chepstow 2.50 | Wed |
| Ordelia | Towcester 2.45 | Sun |
| Ordelia | Towcester 2.45 | Sun |
| Ordelia | Uttoxeter 12.45 | Thu |
| Ordre de Bataille | Ludlow 2.50 | Mon |
| Ordre de Bataille | Ludlow 2.50 | Mon |
| Orfeo Conti | Ludlow 2.15 | Mon |
| Oriental Gem | Lingfield 3.40 | Tue |
| Ormus | Sedgefield 2.50 | Tue |
| Orsett Lad | Kempton 8.20 | Wed |
| Orsippus | Sedgefield 12.50 | Tue |
| Orsippus | Wetherby 2.25 | Wed |
| Orsippus | Musselburgh 12.40 | Fri |
| Oscar Whisky | Newbury 3.45 | Thu |
| Oshkosh | Uttoxeter 2.30 | Thu |
| Oslot | Aintree 12.35 | Sun |
| Ostentation | Lingfield 1.55 | Fri |
| Otage De Brion | Taunton 3.25 | Thu |
| Otage De Brion | Newbury 1.30 | Fri |
| Otto Quercus | Taunton 1.05 | Thu |
| Otto Quercus | Taunton 1.40 | Thu |
| Our Hero | Uttoxeter 1.55 | Thu |
| Our Kes | Kempton 7.50 | Wed |
| Our Kes | Lingfield 3.45 | Wed |
| Our Nana Rose | Navan 12.20 | Sun |
| Our Nana Rose | Gowran Park 12.40 | Tue |
| Our Spring | Wetherby 12.20 | Wed |
| Ouragan Lagrange | Newbury 1.30 | Fri |
| Ours | Lingfield 12.40 | Tue |
| Ouste | Wetherby 12.50 | Wed |
| Out Now | Gowran Park 1.40 | Tue |
| Out The Ring | Wolverhampton 8.20 | Fri |
| Outer Hebrides | Lingfield 2.00 | Wed |
| Over Sixty | Kempton 1.25 | Mon |
| Overbranch | Uttoxeter 3.05 | Thu |
| Overtly Blue | Aintree 2.55 | Sun |
| Overtly Blue | Aintree 2.55 | Sun |
| Overturn | Aintree 12.05 | Sun |
| Overturn | Aintree 12.05 | Sun |
| Oxbridge | Kempton 4.00 | Thu |
| Oxbridge | Kempton 4.30 | Thu |
| Oxlea Lass | Towcester 2.45 | Sun |
| Oxlea Lass | Chepstow 3.55 | Wed |