You can edit your bet can't you on bet365 which will then take the current odds (from memory). Edit: Hmm... Maybe not.
2. (TMF) Doncaster 1.15 Persian Force 3.00 Chindit 4.10 Groundbreaker Wolverhampton 7.30 Aramis Grey (TVF) Doncaster 1.50 Garrus Stratford 1.43 Court Royale