No. Every credit reference agency, bank and financial institution will calculate your credit score slightly differently. They may even calculate your score for different products differently, e.g. the same bank could give you one score for a credit card application and a different score for a mortgage. Banks do not share details on exactly how they make the calculation.
At ClearScore we are provided with your credit score from Equifax, one of the three UK credit reference agencies. Equifax use your most up to date information to produce this score, and the information used will be similar to the information used by the lenders when they calculate your score.