There are a number of types of credit ratings for companies. For example Standard and Poor's is an issuer rated company. AA has very strong capacity to meet its financial commitments. A-1+ is the highest category and indicates the obligers capacity to meet its financial commitments on those obligations is extremely strong.If you have been refused loans or cannot get a credit card or have been turned down for a mortgages, find out about how to repair your credit rating and repair your credit file. Choose from the UK's favourite credit rating specialists online.