The main issuer was Banca Intesa Beograd until, in September 2012, Banca Intesa Beograd began to switch to Visa.[15] United Kingdom Yes* Switch Debit Mastercard or Visa Debit The former Switch debit card system was re-branded as Maestro. Underneath the branding, however, the system was still the old Switch one and the cards were still fundamentally Switch. In 2011, MasterCard aligned UK domestic Maestro cards (the former Switch) with the standard international Maestro system, ending its status as a separate card scheme.