What is a Poor Credit History

Poor Credit History - This could include previous mortgage or loan arrears, CCJ's or bankruptcy. Other terms used to describe a poor credit are non status, credit impaired, Bad Credit, Low score credit 

Where can I check my credit rating?

You can check your rating by using companies like Equifax, where for £10 you can login and check to see why you have a poor credit rating, or even just login to see what your current financial state is.
You will be surprised by the results.