My Financial Broker is a credit broker and not a lender. Warning: Late repayments can cause you serious money problems. For help, go to https://www.moneyhelper.org.uk/
If you have a guarantor loan and are unable to make payment due to a change in circumstance, you should get in touch with your lender. The lender will be able to offer either a payment plan or a payment holiday to suit your needs.
George Banco offered unsecured loans with or without a guarantor with representative APR rates of 49.7%. The company is no longer lending.
GuarantorMyLoan is a Peer to Peer platform for borrowers and lenders. They offer up to £10000 over 5 years with a Rep APR of 48.9%.