A lot of online services start off being free and then automatically enrol you into a chargeable service – is this the case here?
The Experian Credit Score (with no access to your personal Experian Credit Report information) made available to Barclaycard customers through Barclaycard Online servicing is completely free and you will not be charged to use the service.
However, if you choose to contact Experian or another credit reference agency they may charge you for providing a more detailed and personalised product.