Rules regarding the way companies can use your personal information are currently set out within General Data Protection Regulation. You can find out more information about these rules by checking the government data protection website here.
Under the Data Protection Act 1998, Section 7, you have the right to request all information SMARTY hold on you. This is known as a Subject Access Request, or SAR.
You can make a SAR clicking the link here and completing the information included in the form.