Does the lender have any special requirements (e.g. require a guarantor or other collateral)?
It also depends what is your reason for comparing. If you are looking for the best deal than comparison sites will show you what’s on offer.
Other websites let you fill in one from that goes to all lenders in one go. These websites offer you a wider range of lenders and most likely better acceptance rates. This is because one application goes to several lenders until a match found.