Established in 2009, Boku is a mobile payment service which can be used to make deposits at online casinos. Nowadays, several online casinos including Mansion, Winner and others allow you to make deposits with your mobile phone. Essentially, this means you can bypass the need for a bank account when depositing. There are several companies who facilitate this process for mobile payments (sometimes called carrier billing), but Boku is the option most frequently offered at the top UK online casinos. See our list of the top bokus casinos and slots sites in the table below.