Corporation tax and missing receipts

Hello,

I have a new client who I am completing their corporation tax return, unfortunately they have moved premise and lost a number of their receipts. I do not think that this was done purposely just a mistake. They have been able to supply me with complete bank statements which I can use.

As they are VAT registered I am having difficulty reconciling the bank statements and VAT returns. Can anyone advise me on how I can complete the CT return (excluding VAT) by using the bank statements and VAT return (which does not include receipts).

I have told them the importance of record keeping and I do not think that this will happen again.

Thank you in advance