Within Liquidshop, you can choose to have Bacs payments on your site. This would need to be enabled by the Support Dept and is a standard feature of Liquidshop. 

Once this has been enabled, you will see the option for Bacs payment during the order process as shown below.

When your customer continues to payment, the order will be completed on the customers side with no payment taken. It will then appear as an open order within the back office. 

Payment details; a message at the end of the order process (completion page) to include your Bacs details or alternative text. Bacs orders also have their own notification email, the text content can be amended appropriately.