Combining a domestic UK connection with an award flight
Is there a procedure for combining multiple award flights, or an award flight with paid segments? I can't find anything on the BA web site.
I need to add a domestic connection to and from LHR, to a BA reward ticket.
* I buy a LHR-ICN-LHR reward ticket with Avios.
* I buy a connecting ticket from my local airport LBA-LHR-LBA. This can either be using cash, or via another award ticket. It could be a return ticket or two singles.
Can I combine this lot into a single itinerary, with protected connections?