As long as you are only the trustee for the accounts and not a joint holder then the money is safe,
However from a logistical point of view you may find that because of your bankrupt status the bank will close the account meaning you will need to find somewhere else to put the money.
One other thing. i should mention although I doubt that it applies to you. If you had for instance paid a large sum of money into your child's account shortly before bankruptcy, basically to stop it being taken off you, then that would be recoverable by the trustee of the bankruptcy
The Child Trust Fund is the £250 from the government when she was born, and as far as I know - it can't be touched until she's 18 - so I would hope the OR won't touch it.
As for her Halifax account - she's probably only got about £30 in there as we've used the money to buy her things (tough times ). Nothing was bought recently (probably this time last year) so it won't look "dodgy".
And I am pretty sure I'm a trustee as in the address window of all the letters it says my name then Tee for and then my daughters name.