It’s possible, but unlikely that you’ll get a 100% mortgage with poor credit. You’re more likely to be approved if you have a good credit score, low levels of debt and a regular income.
Lenders will need to see evidence that you’ll be able to afford your monthly repayments when deciding whether to approve your application.
It’s always worth trying to improve your credit score before applying for a mortgage. This can help to boost your chances of being accepted.