Hello.
In another thread (see link below) a RCBO was mentioned with the link, http://www.sparksdirect.co.uk/hager-single-module-30macombined-rcbo-mcb-and-rcd-for-domestic-boards-mcb-50a-rcbo-type-b#.VM_Fz8ZrjmR.
Just about to purchase when I noticed on eBay this one as it is a little...