<prompt> Human: I have a credit card that I have not used for a couple of months, it is one of two cards I have and I just dont need the second one.When it comes to credit score or just best practice do I need to cancel it or just leave it sitting in my wallet gathering dust.  <response>: The credit score in the UK is calculated in a different way than that in the US. Be aware that many redditors are from the US and their best practice with a credit card may not be yours. Im from the Netherlands, so I also have a different system. In the Netherlands, it would be best to close such a card. In the US, it would be best to keep it. The UK? I dont know. 