Currently, you can only add funds to your account using a debit card connected to UK bank account. You can deposit funds into your account via the "Deposit' button in the 'My Account' section within the Circl App.
To withdraw funds from your betting account, go to your account page and select 'Withdraw'. You will then be asked how much of your funds you would like to withdraw. These will be sent to the bank account that they were deposited from.