i think you will have problems if you don't have a bank account or savings book, how are you going to show you have finances to support her if you don't have bank statements ? showing you have savings for her to live off and your wages going into your account, so she will not need recourse to public funds, also if its a fiancee visa, she cannot work in the uk.

the embassy want printed bank statements from the bank, as they cannot directly check with your bank about your account, and they will not take online printed bank statements as they are easy to fraud.

from the ukvisa website

"What supporting documents should I include with my application?
You should include all the documents you can to show that you qualify for entry as a husband, wife, civil partner, fiancé, fiancée, proposed civil partner, or unmarried or same-sex partner. If you do not, we may refuse your application.

As a guide, you should include the following:

Your original birth certificate.
Your original marriage certificate (if you are married) or your original civil partnership certificate (if you have registered a civil partnership).
Recent bank statements or savings books for your sponsor and evidence of your sponsor's employment in the UK, which could include payslips to show what financial support you have.
Evidence of your accommodation, such as a mortgage agreement or rental agreement, and evidence that you and your dependants can stay in this accommodation if it is rented or provided by your local authority.
Letters from you and your sponsor that are relevant to your application.
If you have been married or in a civil partnership before, one of the following original documents:
a divorce certificate
a final dissolution order, or
your or your sponsor's previous husband's, wife's or civil partner's death certificate
Evidence that your sponsor is settled in the UK. (This can be a copy of their passport or registration certificate that has been confirmed as a true copy, in other words 'certified'.)

We will refuse your application if we find that any documents are false."