I use two services that provide me with credit score from Experian: Credit Sesame and CreditInform.
From what I understand this is not the FICO score, but Experian's own system.
But what confuses me is that both services use the same source, there is a difference by 81 points between both sites! I also suspect that CreditInform's score still stuck on September's numbers, while Credit Sesame is updated monthly (and improving, yay!)
What causes the difference? And which of these two is closer to the FICO score in your opinion?