1. No limit to what can be paid into the account each month - need to be able to set up standing orders into the account, as well as additional deposits as and when.
2. Can be accessed/viewed online.
3. Fairly decent interest rate (big ask at the moment I appreciate)
I went on the moneysavingexpert site to find this out and it came up with the Halifax Children's Regular Saver. Dont think you can view it online but it is fine with everything else you wanted!